diff --git a/core/src/Variable/VariableAcquisitionWorker.cpp b/core/src/Variable/VariableAcquisitionWorker.cpp
index 9a8f896..1a26737 100644
--- a/core/src/Variable/VariableAcquisitionWorker.cpp
+++ b/core/src/Variable/VariableAcquisitionWorker.cpp
@@ -96,14 +96,13 @@ QUuid VariableAcquisitionWorker::pushVariableRequest(QUuid varRequestId, QUuid v
             auto oldAcqRequest = acqIdentifierToAcqRequestMapIt->second;
             varRequestIdCanceled = oldAcqRequest.m_VarRequestId;
         }
-        // remove old acqIdentifier from the worker
-        impl->cancelVarRequest(oldAcqId);
-        //        impl->m_AcqIdentifierToAcqRequestMap.erase(oldAcqId);
 
         it->second.second = acqRequest.m_AcqIdentifier;
-
-
         impl->unlock();
+
+        // remove old acqIdentifier from the worker
+        impl->cancelVarRequest(oldAcqId);
+        //        impl->m_AcqIdentifierToAcqRequestMap.erase(oldAcqId);
     }
     else {
         // First request for the variable, it must be stored and executed
@@ -344,6 +343,7 @@ void VariableAcquisitionWorker::VariableAcquisitionWorkerPrivate::updateToNextRe
 void VariableAcquisitionWorker::VariableAcquisitionWorkerPrivate::cancelVarRequest(
     QUuid varRequestId)
 {
+    qInfo() << "VariableAcquisitionWorkerPrivate::cancelVarRequest 0";
     lockRead();
     // get all AcqIdentifier in link with varRequestId
     QVector<QUuid> acqIdsToRm;
@@ -359,23 +359,29 @@ void VariableAcquisitionWorker::VariableAcquisitionWorkerPrivate::cancelVarReque
     for (auto acqId : acqIdsToRm) {
         removeAcqRequest(acqId);
     }
+    qInfo() << "VariableAcquisitionWorkerPrivate::cancelVarRequest end";
 }
 
 void VariableAcquisitionWorker::VariableAcquisitionWorkerPrivate::removeAcqRequest(
     QUuid acqRequestId)
 {
+    qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 0";
     QUuid vIdentifier;
     std::shared_ptr<IDataProvider> provider;
     lockRead();
     auto acqIt = m_AcqIdentifierToAcqRequestMap.find(acqRequestId);
+    qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 1";
     if (acqIt != m_AcqIdentifierToAcqRequestMap.cend()) {
         vIdentifier = acqIt->second.m_vIdentifier;
         provider = acqIt->second.m_Provider;
 
+        qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 2";
         auto it = m_VIdentifierToCurrrentAcqIdNextIdPairMap.find(vIdentifier);
         if (it != m_VIdentifierToCurrrentAcqIdNextIdPairMap.cend()) {
+            qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 3";
             if (it->second.first == acqRequestId) {
                 // acqRequest is currently running -> let's aborting it
+                qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 4";
                 unlock();
 
                 // Remove the current request from the worker
@@ -383,27 +389,34 @@ void VariableAcquisitionWorker::VariableAcquisitionWorkerPrivate::removeAcqReque
 
                 // notify the request aborting to the provider
                 provider->requestDataAborting(acqRequestId);
+                qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 5";
             }
             else if (it->second.second == acqRequestId) {
                 it->second.second = QUuid();
+                qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 6";
                 unlock();
             }
             else {
+                qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 7";
                 unlock();
             }
         }
         else {
+            qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 8";
             unlock();
         }
     }
     else {
+        qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 9";
         unlock();
     }
 
+    qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 10";
     lockWrite();
 
     m_AcqIdentifierToAcqDataPacketVectorMap.erase(acqRequestId);
     m_AcqIdentifierToAcqRequestMap.erase(acqRequestId);
 
     unlock();
+    qInfo() << "VariableAcquisitionWorkerPrivate::removeAcqRequest 11";
 }