|| OF_UNDEFINEDEXPRESSIONS

did || OF_UNDEFINEDEXPRESSIONS

and it's still not allowing random expression names,as in

""whatever" is not an expression in object"

and it won't let me close the expression dialogue

am I missing something somewhere else?

Did you use the single-pipe | for bitwise or, or double-pipe || for logical or?

|| only ever returns true or false so if you use it on flags it won't work, you'll just get 1 or 0 back...

thank you, that was the problem