Why are there pre-chosen attributes on my products?

Hi,

I have a problem I do not seam to find a solution to. Probably an easy thing, but beeing new to Zen Cart it all seam difficult lol

I have different sizes in each products in my web shop. I manage to set the attributes but they all come up chosen for, so potential customers can not pick their sizes but get them all. Does this make sence? How can I arange so they can tick the button to the size they want. Now all are marked...

Please look past my bad explaining as english is not my mother language :cool:

Thankful for answers!

Am using Zen Cart 1.3.8a

Make sure that you are using 1 Option Name (such as Size) and Multiple Option Values attached to it (such as Small, Medium and Large) ...