Hi!
There’s a trick in Axure where you can restrict text entry to any set of characters you choose. You create an OnKeyDown interaction testing for keys. Any keystrokes that cause the condition to return FALSE will be allowed in. So the following will only let in the numbers 0 through 9 (from either the top row or from the number pad) and other keystrokes you need when inside of a field, such as for copy/paste, moving around inside of the field, etc.
Here it is so you don’t have to create all of these conditions:
numbers_only_field (1).rp (57.9 KB)