Please, help me understand a custom fields. I want have a two fields, for example "App name" and "App version". I made an "App name" field VISIBLE, and "App version" "NOT VISIBLE". Next, I made a url like as: "/?a=add&custom1=app_name&custom2=1.0"
I'm see a new ticket page and pre-filled one field: "App name". Good. I save "Create ticket", and go to admin page.
I see in ticket "App name" field, but "App version" is empty.

Does I made a INVISIBLE field for customer, but pred-filled by customX url query paramaters?