I understand what you're saying and I wish it were that easy. However, I'm trying to avoid swapping proc files around. That is why I was using DO myProc WITH param1 IN ProcName so I wouldn't have to issue SET PROCEDURE and RELEASE PROCEDURE calls. Unforeturnately the proc I am calling using DO PROCEDURE is part of a compiled program and I can't change its code. It just issues RETURN .T. or RETURN .F. It sounds like you're telling me I can't use DO PROCEUDRE and determine what value the proc returns. The only way is to issue a SET PROC TO ProcName then val = x(param1).