I used lookup expression for a column A, Table X. Now, when i enter the value in Column B, the column A is filling automatically. I need to do this: if i enter the value in column A–>prefill column B, but if there is no value for column B to prefill with, just let me to add something in there manually. Is that possible?
Thank you, and i’m sorry for my bad english.I hope i made my self clear enough.
this is a picture for better understanding what i whant to accomplish