diff --git a/CHANGES_NEXT_RELEASE b/CHANGES_NEXT_RELEASE
index 9b68faf5..e91c5ecb 100644
--- a/CHANGES_NEXT_RELEASE
+++ b/CHANGES_NEXT_RELEASE
@@ -1,3 +1,4 @@
 - Fix: ensure service and subservice from device in logs about error proccesing message
-- Fix: use entityNameExp with autoprovisioned devices (iota-node-lib#1145)
 - Fix: use but not store timestamp and entityNameExp from group with autoprovisioned devices (iotagent-node-lib#1504, partially)
+- Fix: remove autocast (iota-node-lib#1501)
+
diff --git a/lib/commonBindings.js b/lib/commonBindings.js
index 1e4c0676..0d0a224f 100644
--- a/lib/commonBindings.js
+++ b/lib/commonBindings.js
@@ -212,14 +212,19 @@ function singleMeasure(apiKey, attribute, device, messageStr, message) {
     config
         .getLogger()
         .debug('Processing single measure [%s] for device [%s] with apiKey [%s]', messageStr, device.id, apiKey);
+    let value;
+    try {
+        value = JSON.parse(messageStr);
+    } catch (e) {
+        value = messageStr || message.toString('hex');
+    }
     const values = [
         {
             name: attribute,
             type: guessType(attribute, device),
-            value: messageStr || message.toString('hex')
+            value: value
         }
     ];
-
     iotAgentLib.update(device.name, device.type, '', values, device, function (error) {
         if (error) {
             config.getLogger().error(
diff --git a/lib/ulParser.js b/lib/ulParser.js
index e3c62453..17cc73dd 100644
--- a/lib/ulParser.js
+++ b/lib/ulParser.js
@@ -61,7 +61,12 @@ function addAttributePair(collection, pair) {
     if (!pair || pair.length !== 2) {
         throw new errors.ParseError('Extracting attribute:' + JSON.stringify(pair));
     } else {
-        collection[pair[0]] = pair[1];
+        try {
+            collection[pair[0]] = JSON.parse(pair[1]);
+        } catch (e) {
+            collection[pair[0]] = pair[1];
+        }
+
         return collection;
     }
 }
@@ -107,7 +112,7 @@ function parseMeasure(group, numberOfBars) {
         if (timestamp) {
             returnValue[constants.TIMESTAMP_ATTRIBUTE] = timestamp;
         }
-
+        config.getLogger().debug(context, 'parseMeasure %j', returnValue);
         return returnValue;
     }
 }
@@ -226,11 +231,16 @@ function result(payload) {
     }
 
     const deviceData = fields[0].split('@');
-
+    let value;
+    try {
+        value = JSON.parse(fields[1]);
+    } catch (e) {
+        value = fields[1];
+    }
     return {
         deviceId: deviceData[0],
         command: deviceData[1],
-        result: fields[1]
+        result: value
     };
 }
 
@@ -277,17 +287,17 @@ function serializedPayloadCommand(payload, command) {
  */
 function createCommandPayload(device, command, attributes) {
     function addAttributes(current, key) {
-        let cmd = device && device.commands.find((att) => att.name === current.split('@')[1]);
+        const cmd = device && device.commands.find((att) => att.name === current.split('@')[1]);
         let value = attributes[key];
         if (cmd && cmd.expression) {
-            let parser = iotAgentLib.dataPlugins.expressionTransformation;
+            const parser = iotAgentLib.dataPlugins.expressionTransformation;
             // The context for the JEXL expression should be the ID, TYPE, S, SS
             let attrList = iotAgentLib.dataPlugins.utils.getIdTypeServSubServiceFromDevice(device);
             attrList = device.staticAttributes
                 ? attrList.concat(device.staticAttributes).concat({ key: value })
                 : attrList.concat({ key: value });
             config.getLogger().debug(context, 'attrList [%j] for device %j', attrList, device);
-            let ctxt = parser.extractContext(attrList, device);
+            const ctxt = parser.extractContext(attrList, device);
             let valueRes = null;
             try {
                 valueRes = parser.applyExpression(cmd.expression, ctxt, device);
@@ -303,16 +313,16 @@ function createCommandPayload(device, command, attributes) {
     if (typeof attributes === 'object') {
         return Object.keys(attributes).reduce(addAttributes, device.id + '@' + command, command);
     }
-    let cmd = device && device.commands.find((att) => att.name === command);
+    const cmd = device && device.commands.find((att) => att.name === command);
     if (cmd && cmd.expression) {
-        let parser = iotAgentLib.dataPlugins.expressionTransformation;
+        const parser = iotAgentLib.dataPlugins.expressionTransformation;
         // The context for the JEXL expression should be the ID, TYPE, S, SS
         let attrList = iotAgentLib.dataPlugins.utils.getIdTypeServSubServiceFromDevice(device);
         attrList = device.staticAttributes
             ? attrList.concat(device.staticAttributes).concat({ command: attributes })
             : attrList.concat({ command: attributes });
         config.getLogger().debug(context, 'attrList [%j] for device %j', attrList, device);
-        let ctxt = parser.extractContext(attrList, device);
+        const ctxt = parser.extractContext(attrList, device);
         let valueRes = null;
         try {
             valueRes = parser.applyExpression(cmd.expression, ctxt, device);
@@ -321,7 +331,7 @@ function createCommandPayload(device, command, attributes) {
         }
         attributes = valueRes ? valueRes : cmd.expression;
     }
-    let payload = device.id + '@' + command + '|' + attributes;
+    const payload = device.id + '@' + command + '|' + attributes;
     return serializedPayloadCommand(payload, cmd);
 }
 
diff --git a/test/unit/ngsiv2/config-test.js b/test/unit/ngsiv2/config-test.js
index ceb6e58c..76ecd9fa 100644
--- a/test/unit/ngsiv2/config-test.js
+++ b/test/unit/ngsiv2/config-test.js
@@ -45,7 +45,6 @@ config.amqp = {
 
 config.iota = {
     logLevel: 'FATAL',
-    autocast: true,
     contextBroker: {
         host: '192.168.1.1',
         port: '1026',
diff --git a/test/unit/ngsiv2/ultralightMeasures-test.js b/test/unit/ngsiv2/ultralightMeasures-test.js
index aaa4299e..4f4f7ff4 100644
--- a/test/unit/ngsiv2/ultralightMeasures-test.js
+++ b/test/unit/ngsiv2/ultralightMeasures-test.js
@@ -34,7 +34,7 @@ describe('Ultralight 2.0 Parser: measures', function () {
             result.length.should.equal(1);
             should.exist(result[0]);
             should.exist(result[0].a);
-            result[0].a.should.equal('1');
+            result[0].a.should.equal(1);
         });
     });
     describe('When a payload with a multiple measures is parsed', function () {
@@ -46,9 +46,9 @@ describe('Ultralight 2.0 Parser: measures', function () {
             result.length.should.equal(1);
             should.exist(result[0]);
             should.exist(result[0].c);
-            result[0].c.should.equal('7');
+            result[0].c.should.equal(7);
             should.exist(result[0].b);
-            result[0].b.should.equal('18');
+            result[0].b.should.equal(18);
         });
     });
     describe('When a payload with timestamp information is parsed', function () {
@@ -64,7 +64,7 @@ describe('Ultralight 2.0 Parser: measures', function () {
             should.exist(result[0].TimeInstant);
             result[0].TimeInstant.should.equal('2016-06-13T00:35:30Z');
             should.exist(result[0].lle);
-            result[0].lle.should.equal('100');
+            result[0].lle.should.equal(100);
         });
     });
     describe('When a payload with an initial bar and multiple measures is parsed', function () {
@@ -76,9 +76,9 @@ describe('Ultralight 2.0 Parser: measures', function () {
             result.length.should.equal(1);
             should.exist(result[0]);
             should.exist(result[0].c);
-            result[0].c.should.equal('7');
+            result[0].c.should.equal(7);
             should.exist(result[0].b);
-            result[0].b.should.equal('18');
+            result[0].b.should.equal(18);
         });
     });
 
@@ -91,10 +91,10 @@ describe('Ultralight 2.0 Parser: measures', function () {
             result.length.should.equal(2);
             should.exist(result[0]);
             should.exist(result[0].c);
-            result[0].c.should.equal('7');
+            result[0].c.should.equal(7);
             should.exist(result[1]);
             should.exist(result[1].b);
-            result[1].b.should.equal('18');
+            result[1].b.should.equal(18);
         });
     });
     describe('When a payload with multiple groups and measures is parsed', function () {