I am trying to populate project number from line 1 into line that has any text in To-Do column. The single line works but when I try to convert column formula I get "The column formula syntax isn't quite right, see our help article
I have tried it both
=IF(ISBLANK([To-Do]@row), "", [Project Number]$1)
=IF(ISBLANK([To-Do]@row), "", [Project Number]1)