... RM_ADDBARSERIES .... I can't get the data array in ??? - ChrisG aData := { 10.0, 20.0, 30.0, 40.0, 50.0 } // define my array of data nResult := DLLCall( ; hDll, ; // DLL to call DC_CALL_STD, ; // calling convention "RMC_ADDBARSERIES", ; // the function to call nCtrlId, ; 1, ; //region aData, ...