Every time the user changes something in the text box it checks if the length of the text is greater then or equal to 5, if it is chop 1 from the left and set the text in the text box. This limits it to 4 characters in said text box.
Edit: I’m pretty sure with this way you could bypass the limit by simply copying in text instead. So you should take the maximum limit - the length of the text > absolute > clamp 1-X and plug that into the “Left Chop” nodes count, that way even if you copy something it should chop it off to the maximum limit.
Edit2: Something like this would work.
