Is it possible to create a condition that the field cant end with " " (space)?

THANKS FOR YOUR HELP!!

I find this impossible to do with conditional logic. A workaround would be to use a Single Entry field then enable input masking:

https://www.jotform.com/help/381-Getting-Started-with-the-Basics-of-Input-Masking

You can conditionally set an input mask in a field, here's our guide for this method: https://www.jotform.com/help/358-How-to-Set-Content-Mask-on-a-Form-Field-Based-on-Another-Field-Input.

Let me know if this works or not.

I tried the condition above but didnt work. Even if the field ends with a letter it hides de next button.

If I use a mask the it will impossible to right less than the mask permits right?

I wanna put a limit with 20 symbols but my problem it is when the person ends with " " (space). This counts as a symbol.

As explained by my colleague above, will not be possible to achieve it with condition. Using input mask you will not be able to type a space between the string and if the characters typed are less than the limit then you will not be able to submit the form. 

There  is a character counter widget, but it counts spaces, please find the widget here: https://widgets.jotform.com/widget/character_counter 

You will also find a demo form on the widget's page. 

If you want, we could open a feature request so the widget does not count spaces. Please let us know. 

I'm afraid that your last reply didn't go all the way through. Could you please reply again?

Thank you!

I said Thanks haha I didnt know about this widget. The count space is necessary, this is perfect.