create a text field in Adobe Acrobat to only accept input in English characters

[Hossein5FC0]

How can we create a text field in Adobe Acrobat to only accept input in English characters?
If a user attempts to enter a non-English character, the input rejects.

Please Help me 🙂

[Thom Parker]

You could restrict input to ASCII characters using a keystroke script. 

Use this custom keystroke script

if(!event.willCommit)
   event.rc = event.change.split("").every(function(a){return a.charCodeAt(0)< 128});