Set a breakpoint on the value changing for the variables. Then if the variable ever gets undefined or redefined, you will find exactly where this is happening. This will obviously happen where you define them, but then elsewhere you will see where they get changed.

>Hi everyone,
>
>I have these lines at the top of main program of my application:
>
>private pcTempDrive, FieldValPrefix, TableValPrefix && Make them visible everywhere in the project
>pcTempDrive=justdrive(sys(2023)) && VFP Temp drive
>FieldValPrefix ='IIF(VARTYPE(oValid)#"O".OR.Ovalid.nlocked<0,.F.,IIF(Ovalid.nlocked=0,.T.,))'
>TableValPrefix ='IIF(VARTYPE(oValid)#"O".OR.Ovalid.nlocked<0,.F.,IIF(Ovalid.nlocked=0,.T.,))'
>
>Main program calls form (do form ...), this form calls a function. In this function I got an error, that these variables are not defined. Could somebody give me a clue, why is what?
>
>I can add a check, no problem, but just want to understand the reason for this behavior.

Mark McCasland
Midlothian, TX USA