Plugin with Trumbowyg

Hello,

I’w trying to build a plugin with Trumbowyg, but I can’t find how to (autosave or just save) the input’s value in my data.
I 've created a text, and the plugin let’s appear the textarea with the buttons. that’s ok. (if I put an input, I can’t display the initial content)
And autobinding doesn’t work.

Thanks for any help!