Starter kit input - Essential properties missing

Hello, I’m using the starter kit input and I’m having trouble accessing some elements or even making the on input change flow work. I need to disable it or make it read-only, and I also need to capitalize the text when editing.

How can I do this since I haven’t found the correct way to change the content of the input in the on input change?

I wouldn’t like to lose the link with the starter kit, it would be interesting if you created properties for these purposes and also an option for value so that I can already assign the value to my variable and if I want to have an on input change I would just need to change the value of my variable. This not only applies to input text but to all existing inputs, including select.