Question how do i set character limit for text mesh pro?

I have a textMesh Pro that i would like to set the amount of character, it from 1 to 9999, but i press play and i use a button to manipulate my textmeshpro, and i can write characters in the scenn till infinite...i just need to validate only a maxlengt of 4

 

You can use onValueChanged on the input field. If you have more characters than the allowed count simply remove the last bit