SELECT 0 && workarea is 75 INSERT INTO myTable (...) SELECT ... FROM ... myFunction() ... && this can use WA 75 ? myTable2.fieldname && if VFP return to 75 it is not deterministic myFunction USE ... IN 0 ALIAS myTable2 && this can use WA 75 or 76 or ...then because the free workareas are used by VFP Engine and by VFP program,