Task #2926: Fixed pointer issue

LCS/WinCCWrapper/src/WinCCManager.cc

@@ -622,7 +622,7 @@ bool WinCCManager::set_datapoint_validity(const std::string &name, bool validity
         if(DpIdentificationResult::DpIdentOK == dir) {
             VariableType dpId_VariableType = DpElement::getVariableType(dpId_ElementType);
             std::cout << "DpVariableType is " << dpId_VariableType << "\n";  // Print db JZ
-            VariableType value_VariableType = value.isA();
+            VariableType value_VariableType = value->isA();
             std::cout << "Value Variable Type is " << value_VariableType << "\n";
         }