StringField subscribe_end_edit_fn

Currently I’m facing on an issue to get the string field result once the user has completed typing or edited the text.
so, I have used the below code, can someone help me know where am I going wrong?
When we click on the enter key, it works.
But I need to have that text once the user has completed the edit or entering is done.

@shazan.fazal i don’t have an extensive experience developing extensions, but it feels like hitting enter is a necessary step. i hope we can get confirmation from the devs.

Thank you @Simplychenable