Character limit in Text Data entry

Hi there Eric,

That's not currently possible using a built-in method in Storyline, but you can submit a feature request here.

You might also be interested in a similar discussion that took place in this older thread. You may see a familiar face there :)

Having said all that - I think there was some light mention of being able to do this with JavaScript. Though this isn't something I could help with, maybe others could jump in and provide some suggestions. 

Thanks!