LPARAMETERS tlUseExistingServer
I triedLPARAMETERS tlUseExistingServer AS BOOLEAN NULLBut that just lets me store .null. to the parameter after it has been passed. I know you can use PCOUNT() or PARAMETERS() to test if something passed but that does not work so well if you want to pass *some* parameters but not others and you still want to know if something has been passed or not.