Perform Lookup on RealEdit Control in AX2012

Lookup for RealEdit Control in Ax2012

we cant build the lookup for RealEdit control by using SysLookup functionality for that we have to customize the SysTableLookup class method performFormLookup()
Add the case for switch for handling the FormRealControl.
FormRealControl     callingRealControl;


 case classNum(FormRealControl):
            callingRealControl = callingControl;
            callingRealControl.performFormLookup(this.formRun());
            break;