Change input to textarea

Hi! Thanks for the great plugin, it works perfectly.
I just want to ask you if there’s a chance to have a textarea instead of input field while writing an article in admin panel. It would be great to see what I’m writing and having a resizable field would help me a lot. I’ve tried to edit by myself, everything works fine but it just saves the first time I input the description, then it will keep the first thing written forever without possibility to change the text. Hope you can help me! Thanks