Unable to add icon under class defaults

So I am following this tutorial for setting up a inventory system, now I am having trouble adding my imported textures. I followed the first video of tutorial it tells you to set they texture to UI group and compression settings to UserInterface2d. Do Icons materials need any other parameters I am missing. The one i am trying to use is 128 x 128 jpg

Figured out my issue. When I was building my structure for my inventory items I did not choose the type texture 2d I put LightMap texture 2d.