Inject Js script - Help

Hi All

please help me
I am new to Inject JsScript, I was able to do a few JS scripts but I am trying to figure out how to access and change this particular object

Have a check on following:
AlterIfDisabled - If enabled, the action is executed even if the specified UI element is disabled.
from:

Maybe this flag from newer package version makes the need of using js obsolete

Thank you so much Peter, i will give it a try