Very strange. Are you getting this error regardless of what parameter you pass to MsgSvc? I would expect so, since the code which runs is the same regardles of what the parameter is.

My best guess without knowing more is to COMPILE MSGSVC.PRG and try again.
zahid

>Hello:
>
>Is there a solution for this problem:
>
>When I run: If MSGSVC('Anticipate Allocation') = "No" from a prg,
>I get the following error: "Function argument value, type, or count is
>invalid!
>
>in the following funtion - FUNCTION Long2Str:
> m.retstr = CHR(INT(m.longval/(2^I))) + m.retstr
>
>(m.longval = 340)
>
>When ran from a form, or the command window, it is ok!
>
>Thank you.