addOnKeyPress doesn't work om Unified interface for MSDCRM 365 Online

Greetings All,

I'd like to ask if someone has had an issue with addOnKeyPress in Unified Interface(Customer Service Hub) for MSDCRM 365 Online. 

The keypress function that is not executed is pretty simple:
executionContext.getFormContext().getControl("telephone1").addOnKeyPress(

function(ext)

{

alert("Telephone: " + executionContext.getFormContext().getControl("telephone1").getValue())}

);

There are not any errors on the console. Just the event is not fired when changing the value inside the Telephone filed. I've tried also with some of the Address fields and also with custom Single Line of Text fields.

Thank you in advance!