diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index d171549..a53a652 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,7 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="d239e344-b65f-4ed2-8326-fa96cd01458c" name="Default Changelist" comment="feat(sheba):added AccountNumberModel class">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/example/example_sheba_methods.dart" beforeDir="false" afterPath="$PROJECT_DIR$/example/example_sheba_methods.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/lib/src/constants/sheba/constants.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/src/constants/sheba/constants.dart" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/lib/src/core/sheba/methods.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/src/core/sheba/methods.dart" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/test/test_sheba_methods.dart" beforeDir="false" afterPath="$PROJECT_DIR$/test/test_sheba_methods.dart" afterDir="false" />
     </list>
@@ -104,41 +106,6 @@
       <option name="presentableId" value="Default" />
       <updated>1615659980894</updated>
     </task>
-    <task id="LOCAL-00059" summary="test(bill):added call method testcase">
-      <created>1616080240823</created>
-      <option name="number" value="00059" />
-      <option name="presentableId" value="LOCAL-00059" />
-      <option name="project" value="LOCAL" />
-      <updated>1616080240823</updated>
-    </task>
-    <task id="LOCAL-00060" summary="feat(validate card number):added validateCardNumber method">
-      <created>1616082398110</created>
-      <option name="number" value="00060" />
-      <option name="presentableId" value="LOCAL-00060" />
-      <option name="project" value="LOCAL" />
-      <updated>1616082398111</updated>
-    </task>
-    <task id="LOCAL-00061" summary="improvement(main lib):export validate_card_number.dart">
-      <created>1616082598620</created>
-      <option name="number" value="00061" />
-      <option name="presentableId" value="LOCAL-00061" />
-      <option name="project" value="LOCAL" />
-      <updated>1616082598620</updated>
-    </task>
-    <task id="LOCAL-00062" summary="improvement(main lib):change doc comments to regular comments">
-      <created>1616082643102</created>
-      <option name="number" value="00062" />
-      <option name="presentableId" value="LOCAL-00062" />
-      <option name="project" value="LOCAL" />
-      <updated>1616082643102</updated>
-    </task>
-    <task id="LOCAL-00063" summary="fix(validate card number):change number of iteration">
-      <created>1616083558047</created>
-      <option name="number" value="00063" />
-      <option name="presentableId" value="LOCAL-00063" />
-      <option name="project" value="LOCAL" />
-      <updated>1616083558048</updated>
-    </task>
     <task id="LOCAL-00064" summary="test(validate card number):create testcase">
       <created>1616083687623</created>
       <option name="number" value="00064" />
@@ -447,7 +414,42 @@
       <option name="project" value="LOCAL" />
       <updated>1616692947549</updated>
     </task>
-    <option name="localTasksCounter" value="108" />
+    <task id="LOCAL-00108" summary="improvement(sheba):added two fields in BankInformation class constructor">
+      <created>1616698258357</created>
+      <option name="number" value="00108" />
+      <option name="presentableId" value="LOCAL-00108" />
+      <option name="project" value="LOCAL" />
+      <updated>1616698258357</updated>
+    </task>
+    <task id="LOCAL-00109" summary="feat(sheba):override == operator in BankInformation">
+      <created>1616739938083</created>
+      <option name="number" value="00109" />
+      <option name="presentableId" value="LOCAL-00109" />
+      <option name="project" value="LOCAL" />
+      <updated>1616739938083</updated>
+    </task>
+    <task id="LOCAL-00110" summary="feat(sheba):set process field to null&#10;in Map we remove it instead we set it null">
+      <created>1616740036649</created>
+      <option name="number" value="00110" />
+      <option name="presentableId" value="LOCAL-00110" />
+      <option name="project" value="LOCAL" />
+      <updated>1616740036649</updated>
+    </task>
+    <task id="LOCAL-00111" summary="improvement(sheba):update testcase">
+      <created>1616740099393</created>
+      <option name="number" value="00111" />
+      <option name="presentableId" value="LOCAL-00111" />
+      <option name="project" value="LOCAL" />
+      <updated>1616740099393</updated>
+    </task>
+    <task id="LOCAL-00112" summary="improvement(sheba):update example">
+      <created>1616740696404</created>
+      <option name="number" value="00112" />
+      <option name="presentableId" value="LOCAL-00112" />
+      <option name="project" value="LOCAL" />
+      <updated>1616740696404</updated>
+    </task>
+    <option name="localTasksCounter" value="113" />
     <servers />
   </component>
   <component name="UnknownFeatures">
@@ -478,11 +480,6 @@
     <option name="oldMeFiltersMigrated" value="true" />
   </component>
   <component name="VcsManagerConfiguration">
-    <MESSAGE value="docs(readme):added Digits/methods" />
-    <MESSAGE value="feat(sheba):added dataset" />
-    <MESSAGE value="docs(sheba):added dataset documents" />
-    <MESSAGE value="feat(sheba):added and init Sheba class" />
-    <MESSAGE value="feat(sheba):added private _iso7064Mod97_10 method" />
     <MESSAGE value="feat(sheba):added isValid getter" />
     <MESSAGE value="improvement(main lib):export Sheba/methods.dart" />
     <MESSAGE value="test(sheba):test isValid getter" />
@@ -503,6 +500,11 @@
     <MESSAGE value="feat(sheba):added AccountNumberModel class" />
     <MESSAGE value="feat(sheba):added BankInformation class" />
     <MESSAGE value="feat(sheba):changed banks info type&#10;from Map&lt;String , dynamic&gt; to BankInformation" />
-    <option name="LAST_COMMIT_MESSAGE" value="feat(sheba):changed banks info type&#10;from Map&lt;String , dynamic&gt; to BankInformation" />
+    <MESSAGE value="improvement(sheba):added two fields in BankInformation class constructor" />
+    <MESSAGE value="feat(sheba):override == operator in BankInformation" />
+    <MESSAGE value="feat(sheba):set process field to null&#10;in Map we remove it instead we set it null" />
+    <MESSAGE value="improvement(sheba):update testcase" />
+    <MESSAGE value="improvement(sheba):update example" />
+    <option name="LAST_COMMIT_MESSAGE" value="improvement(sheba):update example" />
   </component>
 </project>
\ No newline at end of file
diff --git a/example/example_sheba_methods.dart b/example/example_sheba_methods.dart
index 1978cc5..59575f3 100644
--- a/example/example_sheba_methods.dart
+++ b/example/example_sheba_methods.dart
@@ -8,7 +8,7 @@ void main() {
   print(bank?.persianName); // complete persian name of bank
   print(bank?.code); // code of bank
   // true means with sheba package can take account number, false means package can't
-  print(bank?.accountNumberAvailable);
+  print(bank?.isAccountNumberAvailable);
   print(bank?.accountNumber); // account number in simple numbers
   print(bank?.formattedAccountNumber); // account number with hyphen
   print(bank?.process); // always is null just uses in call method in Sheba
@@ -18,7 +18,7 @@ void main() {
       name: 'Parsian Bank',
       persianName: 'بانک پارسیان',
       code: '054',
-      accountNumberAvailable: true,
+      isAccountNumberAvailable: true,
       accountNumber: '020817909002',
       formattedAccountNumber: '0020-0081790-002');
   print(bank == b);
diff --git a/lib/src/constants/sheba/constants.dart b/lib/src/constants/sheba/constants.dart
index dc1a379..9de63de 100644
--- a/lib/src/constants/sheba/constants.dart
+++ b/lib/src/constants/sheba/constants.dart
@@ -6,232 +6,232 @@ var _banksInfo = <BankInformation>[
       name: 'Central Bank of Iran',
       persianName: 'بانک مرکزی جمهوری اسلامی ایران',
       code: '010',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'sanat-o-madan',
       name: 'Sanat O Madan Bank',
       persianName: 'بانک صنعت و معدن',
       code: '011',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'mellat',
       name: 'Mellat Bank',
       persianName: 'بانک ملت',
       code: '012',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'refah',
       name: 'Refah Bank',
       persianName: 'بانک رفاه کارگران',
       code: '013',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'maskan',
       name: 'Maskan Bank',
       persianName: 'بانک مسکن',
       code: '014',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'sepah',
       name: 'Sepah Bank',
       persianName: 'بانک سپه',
       code: '015',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'keshavarzi',
       name: 'Keshavarzi',
       persianName: 'بانک کشاورزی',
       code: '016',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'melli',
       name: 'Melli',
       persianName: 'بانک ملی ایران',
       code: '017',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'tejarat',
       name: 'Tejarat Bank',
       persianName: 'بانک تجارت',
       code: '018',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'saderat',
       name: 'Saderat Bank',
       persianName: 'بانک صادرات ایران',
       code: '019',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'tosee-saderat',
       name: 'Tose Saderat Bank',
       persianName: 'بانک توسعه صادرات',
       code: '020',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'post',
       name: 'Post Bank',
       persianName: 'پست بانک ایران',
       code: '021',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'toose-taavon',
       name: 'Tosee Taavon Bank',
       persianName: 'بانک توسعه تعاون',
       code: '022',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'tosee',
       name: 'Tosee Bank',
       persianName: 'موسسه اعتباری توسعه',
       code: '051',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'ghavamin',
       name: 'Ghavamin Bank',
       persianName: 'بانک قوامین',
       code: '052',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'karafarin',
       name: 'Karafarin Bank',
       persianName: 'بانک کارآفرین',
       code: '053',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'parsian',
       name: 'Parsian Bank',
       persianName: 'بانک پارسیان',
       code: '054',
-      accountNumberAvailable: true,
+      isAccountNumberAvailable: true,
       process: _parsianBankProc),
   BankInformation(
       nickname: 'eghtesad-novin',
       name: 'Eghtesad Novin Bank',
       persianName: 'بانک اقتصاد نوین',
       code: '055',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'saman',
       name: 'Saman Bank',
       persianName: 'بانک سامان',
       code: '056',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'pasargad',
       name: 'Pasargad Bank',
       persianName: 'بانک پاسارگاد',
       code: '057',
-      accountNumberAvailable: true,
+      isAccountNumberAvailable: true,
       process: _pasargadBankProc),
   BankInformation(
       nickname: 'sarmayeh',
       name: 'Sarmayeh Bank',
       persianName: 'بانک سرمایه',
       code: '058',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'sina',
       name: 'Sina Bank',
       persianName: 'بانک سینا',
       code: '059',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'mehr-iran',
       name: 'Mehr Iran Bank',
       persianName: 'بانک مهر ایران',
       code: '060',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'shahr',
       name: 'City Bank',
       persianName: 'بانک شهر',
       code: '061',
-      accountNumberAvailable: true,
+      isAccountNumberAvailable: true,
       process: _shahrBankProc),
   BankInformation(
       nickname: 'ayandeh',
       name: 'Ayandeh Bank',
       persianName: 'بانک آینده',
       code: '062',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'ansar',
       name: 'Ansar Bank',
       persianName: 'بانک انصار',
       code: '063',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'gardeshgari',
       name: 'Gardeshgari Bank',
       persianName: 'بانک گردشگری',
       code: '064',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'hekmat-iranian',
       name: 'Hekmat Iranian Bank',
       persianName: 'بانک حکمت ایرانیان',
       code: '065',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'dey',
       name: 'Dey Bank',
       persianName: 'بانک دی',
       code: '066',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'iran-zamin',
       name: 'Iran Zamin Bank',
       persianName: 'بانک ایران زمین',
       code: '069',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'resalat',
       name: 'Resalat Bank',
       persianName: 'بانک قرض الحسنه رسالت',
       code: '070',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'kosar',
       name: 'Kosar Credit Institute',
       persianName: 'موسسه اعتباری کوثر',
       code: '073',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'melal',
       name: 'Melal Credit Institute',
       persianName: 'موسسه اعتباری ملل',
       code: '075',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'middle-east-bank',
       name: 'Middle East Bank',
       persianName: 'بانک خاورمیانه',
       code: '078',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'noor-bank',
       name: 'Noor Credit Institution',
       persianName: 'موسسه اعتباری نور',
       code: '080',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'mehr-eqtesad',
       name: 'Mehr Eqtesad Bank',
       persianName: 'بانک مهر اقتصاد',
       code: '079',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'mehr-iran',
       name: 'Mehr Iran Bank',
       persianName: 'بانک مهر ایران',
       code: '090',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
   BankInformation(
       nickname: 'iran-venezuela',
       name: 'Iran and Venezuela Bank',
       persianName: 'بانک ایران و ونزوئلا',
       code: '095',
-      accountNumberAvailable: false),
+      isAccountNumberAvailable: false),
 ];
 
 AccountNumberModel _parsianBankProc(String string) {
diff --git a/lib/src/core/sheba/methods.dart b/lib/src/core/sheba/methods.dart
index dd4316b..9ce4a5a 100644
--- a/lib/src/core/sheba/methods.dart
+++ b/lib/src/core/sheba/methods.dart
@@ -13,7 +13,7 @@ class AccountNumberModel {
 /// Stores Bank information that [banksInfo] uses
 class BankInformation {
   final String nickname, name, persianName, code;
-  final bool accountNumberAvailable;
+  final bool isAccountNumberAvailable;
   AccountNumberModel Function(String)? process;
   String? accountNumber, formattedAccountNumber;
 
@@ -22,7 +22,7 @@ class BankInformation {
     required this.name,
     required this.persianName,
     required this.code,
-    required this.accountNumberAvailable,
+    required this.isAccountNumberAvailable,
     this.process,
     this.accountNumber,
     this.formattedAccountNumber,
@@ -35,7 +35,7 @@ class BankInformation {
         name == other.name &&
         persianName == other.persianName &&
         code == other.code &&
-        accountNumberAvailable == other.accountNumberAvailable &&
+        isAccountNumberAvailable == other.isAccountNumberAvailable &&
         accountNumber == other.accountNumber &&
         formattedAccountNumber == other.formattedAccountNumber &&
         process == other.process;
@@ -90,7 +90,7 @@ class Sheba {
     final bankCode = patternCode.firstMatch(shebaCode)?[1] ?? '';
     var bank = banksInfo[bankCode];
     if (bank == null) return null;
-    if (bank.accountNumberAvailable) {
+    if (bank.isAccountNumberAvailable) {
       final data = bank.process!(shebaCode);
       bank.accountNumber = data.accountNumber;
       bank.formattedAccountNumber = data.formattedAccountNumber;
diff --git a/test/test_sheba_methods.dart b/test/test_sheba_methods.dart
index 84db740..fd0916f 100644
--- a/test/test_sheba_methods.dart
+++ b/test/test_sheba_methods.dart
@@ -19,7 +19,7 @@ void main() {
                 name: 'Parsian Bank',
                 persianName: 'بانک پارسیان',
                 code: '054',
-                accountNumberAvailable: true,
+                isAccountNumberAvailable: true,
                 accountNumber: '020817909002',
                 formattedAccountNumber: '0020-0081790-002'),
           ));