Adding values to attributes

[N-Connection]

Hi,

 

I wante to add attributes to my products like colors and sizes.  I can make an attribute but when i want to add values the drop-down box "attribute group" stays empty (see picture).

 

Working with prestashop 1.6.0.5 (dutch translation)

 

 

 

 

 

Thanks for your help!!!

Hans

http://www.N-Shop.be