Vizlib Writeback - character limit

Hello Vizlib,

our customers requested to have character limit when entering text into writeback table. the request is to be able to limit to 500 characters and also to be able to limit to 5000 characters. Currently I am not able to provide this request as a solution for the users. I can only provide informational tooltip, but it would be nice to provide character limit and some warning when the character limit is reached. Is there any possibility for this for future release? 

Thank you