Quick Derma Question About Size

How would I change this to a full screen panel?:

chars:SetSize(250, 100);

I was just wondering if that would be possible, I usually just make small Panels, making full sized ones that fill the whole screen would be fantastic!

Thanks.

chars:SetSize(ScrW(), ScrH())

Then set the position of the panel to like 0, 0

Thanks! Big help dude.

I liked the fast reply.