I want to count the character/letters in a multi line text box to avoid having more than 140 characters into this box. Is there a way to show how many characters are in a text box? I use "on validate" to tell users to stay below 140, but it's never clear how many letters have be deleted to match the maximum. I'd like to display the total of characters used in a separate (formular) box. 

Thank you for suggestions!

Oliver