How to use HTML field value(Object Screen) in transaction

Hi Experts,

I have created object screen and created field type HTML and another field type button. On button click i want to display value that is entered in HTML field(using update rule make this field like input box).Already tried to print value from screen field but its giving blank.

So is it possible to display value entered in HTML field via click over button.

html-field-like-text-area.png

Regards

Mohit