Check if multiple text boxes are empty (1 Viewer)

[Uncle Gizmo]

Tag property could hold several values and just use Instr() ?

Yes, definitely another valid solution. I'm feeling sorry for the Cat!

I think Colin explained that method on his website here:-

https://www.isladogs.co.uk/set-controls/4594398114.html

UG Updated URL:-

 

[isladogs]

Unfortunately all the old links will now be broken.
Updated link which works Set Controls - Mendip Data Systems (isladogs.co.uk)