diff --git a/projects/ngx-formentry/src/abstract-controls-extension/afe-form-array.ts b/projects/ngx-formentry/src/abstract-controls-extension/afe-form-array.ts
index 089036c6..524205e1 100644
--- a/projects/ngx-formentry/src/abstract-controls-extension/afe-form-array.ts
+++ b/projects/ngx-formentry/src/abstract-controls-extension/afe-form-array.ts
@@ -144,6 +144,8 @@ export class AfeFormArray
   }
 
   setValue(value: any) {
-    super.setValue(value);
+    if (value !== null) {
+      super.setValue(value);
+    }
   }
 }
diff --git a/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.spec.ts b/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.spec.ts
index 9a745f26..fc31a925 100644
--- a/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.spec.ts
+++ b/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.spec.ts
@@ -33,7 +33,8 @@ describe('Control Hider Helper Service:', () => {
       show: () => {},
       hiders: [],
       updateHiddenState: () => {},
-      setHidingFn: (newHider: Hider) => {}
+      setHidingFn: (newHider: Hider) => {},
+      setValue: (value: any) => {}
     };
 
     control.hide();
@@ -56,7 +57,8 @@ describe('Control Hider Helper Service:', () => {
       },
       hiders: [],
       updateHiddenState: () => {},
-      setHidingFn: (newHider: Hider) => {}
+      setHidingFn: (newHider: Hider) => {},
+      setValue: (value: any) => {}
     };
 
     control.show();
@@ -76,7 +78,8 @@ describe('Control Hider Helper Service:', () => {
       updateHiddenState: () => {},
       setHidingFn: (newHider: Hider) => {
         helper.setHiderForControl(control, newHider);
-      }
+      },
+      setValue: (value: any) => {}
     };
 
     const hider: Hider = {
@@ -103,7 +106,8 @@ describe('Control Hider Helper Service:', () => {
       show: () => {},
       hiders: [],
       updateHiddenState: () => {},
-      setHidingFn: (newHider: Hider) => {}
+      setHidingFn: (newHider: Hider) => {},
+      setValue: (value: any) => {}
     };
 
     const hider: Hider = {
@@ -138,7 +142,8 @@ describe('Control Hider Helper Service:', () => {
       updateHiddenState: () => {
         helper.evaluateControlHiders(control);
       },
-      setHidingFn: (newHider: Hider) => {}
+      setHidingFn: (newHider: Hider) => {},
+      setValue: (value: any) => {}
     };
 
     const hider1: Hider = {
@@ -186,7 +191,8 @@ describe('Control Hider Helper Service:', () => {
       updateHiddenState: () => {
         helper.evaluateControlHiders(control2);
       },
-      setHidingFn: (newHider: Hider) => {}
+      setHidingFn: (newHider: Hider) => {},
+      setValue: (value: any) => {}
     };
 
     const hider4: Hider = {
@@ -230,7 +236,8 @@ describe('Control Hider Helper Service:', () => {
         helper.evaluateControlHiders(control);
       },
       setHidingFn: (newHider: Hider) => {},
-      valueChanges: subject.asObservable()
+      valueChanges: subject.asObservable(),
+      setValue: (value: any) => {}
     };
 
     const hider1: Hider = {
diff --git a/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.ts b/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.ts
index 4b3dd1fa..4bc5c49a 100644
--- a/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.ts
+++ b/projects/ngx-formentry/src/form-entry/control-hiders-disablers/hider-helpers.ts
@@ -26,6 +26,7 @@ export class HiderHelper {
       hider.reEvaluateHidingExpression();
       if (hider.toHide === true) {
         hiddenValue = true;
+        control.setValue(null);
       }
     });
 
diff --git a/projects/ngx-formentry/src/form-entry/value-adapters/obs.adapter.spec.ts b/projects/ngx-formentry/src/form-entry/value-adapters/obs.adapter.spec.ts
index 23468209..9ab0b3be 100644
--- a/projects/ngx-formentry/src/form-entry/value-adapters/obs.adapter.spec.ts
+++ b/projects/ngx-formentry/src/form-entry/value-adapters/obs.adapter.spec.ts
@@ -411,8 +411,8 @@ describe('Obs Value Adapter: ', () => {
       expect(value['onArt']).toEqual('a899b35c-1350-11df-a1f1-0026b9348838');
       expect(value['tbadhere']).toEqual({
         tb_adherence: 'a8b0f882-1350-11df-a1f1-0026b9348838',
-        adherenceTbTreatment: '',
-        adherenceTbOther: ''
+        adherenceTbTreatment: null,
+        adherenceTbOther: null
       });
 
       // check complex values