I am trying to use a text column, as opposed to a number column, as I don't want any of the number formatting that automatically comes with Sharepoint.
I only want this column to accept multiples of 10. I've tried this validation formula:
=AND(ISNUMBER([Priority]+0), [Priority]%10=0)
And variants on it, but to no avail. Effectively, I need to check the input is a number, then check it is a multiple of 10. Is this possible?