>Hi Erik,
>
>>Check out the help for UDFPARMS...
>
>Try this:
>
>

Var = 'Passed by Value'
>do passcheck with Var
>wait window Var
>
>proc passcheck
>    lparam tVar
>    tVar = 'Passed by Reference'
>endproc
>
>Now Try
>
>Var = 'Passed by Value'
>do passcheck with (Var)
>wait window Var
>
>proc passcheck
>    lparam tVar
>    tVar = 'Passed by Reference'
>endproc

Notice the only differnce is the DO line. Am I missing the point again?

I don't think we're in disagreement. My point was that SET UDFPARMS doesn't affect parameters passed with a WITH clause after a DO statement. When you surround the parameter with parentheses, you are effectively passing a literal, instead of the actual variable. At runtime, the variable is evaluated before it is passed, and passed to the procedure in pure string form, so yes, it is effectively passed by value.