My modification on a Javascript code doesn't apply on a formular

Hello,

For a Dynamics CRM project, I had to write a javascript code for a form so that a text field changes value when a check box changes state (When check -> $ ("#champtext"). val ("Text1"), uncheck -> $ ("#champtext"). val ("Text2").

This javascrip code I wrote it in the dedicated text field by going to Portals -> Entity Formulas and I select the form in question.

This code is executed and works very well.

The customer asks me to change the value when the chackbox is checked ("text3" instead of "text1" for example). So I'm modifying the code I previously wrote.

But my modifications are not taken into account! Yet my code is well saved.

Each time I go back to Portals -> Feature Formulas and select the form in question I see my modified code but when I start the form (F12), no error in the console and the script code is not up to date (although the code generation date is the date I update the page).
I cleaned the cache, made on several browsers, nothing works.

If you've ever met this case, please help me.
Thank you in advance.

Sincerely,

Raphael HENIN.