Editor Extensions and Modding?

I want to add buttons to execute custom functions for a faster workflow. Everything is working great since I can open the developer console and execute JS commands, with the exception of setting the value of input fields.

Ex: When I open the window to create a new request I get the input element that sets the request name. I then try to do element.value = “test request”. It sets the value correctly, but it doesn’t register with however Postman gets the text of an input element since when I click create it gives me an error that the name was not set.

Is there any easier way to create an extension/mod for the editor? If not- does anyone know how postman determines the input value of a text box?