$rs_RecurseLabel isn't read-only, $$rs_RecurseLabel and $sRecurseLabel are. They could be for several reasons. How do you declare $sRecurseLabel?

Also, if your prototype isn't seen by the calling code, this could cause lots of interesting problems. You should use the debugger (or debug print statements) to report what @_ looks like when that routine is called.

        - tye (but my friends call me "Tye")