It would be better to communicate here at the moment - so others can see -
and correct me, if need be, or step into the breach. If you already have
something coded I am happy for you to send me a copy of it so we both know
what we're talking about.
On re-reading your post, I see you want to use an Input box, in which case,
no, I don't think you can do what you ask. What type of Form are you talking
about? I assumed it was a (VBA) Userform but I was probably wrong - maybe it
is what you want, though.