Did you find an answer on this?

I’m looking for a way to set a field for 1 - 6 numbers only. Possible?

I’m not yet aware of a way to limit fields to a specific char-count before data is entered. You can use formulas to extract a section of a string of a specific lengths, but currently formulas can’t “wait” for data in empty fields.

We have built a third-party form that integrates with Airtable. One of its features is the ability to have a character limit for text fields.