SET PROCEDURE TO CLSEVENT ADDITIVE PRIVATE oAppEvent oAppEvent = CREATEOBJ('cusEvent') IF TYPE('oAppEvent') # 'O' * either the Event already exists, or it is not creatable. IAC, don't run the app QUIT ENDIF>I want to run my Application EXE File Only one time, if the user try to run the application again on the same machine I want the application not to run again, so I need only one instance of my EXE file, any help on that.