scrap keyboard okay bracket

This keyboard should work for the Xperia Tablet Z, which is a terrible way.
First, I took a long time to the keyboard einzstellen that were swapped keys ... when I then found it after much research on the Internet how to do that, I now wanted to show the nice cozy stand and write my work theology ... problem with the whole thing: this "bracket function" is completely useless. my tray always falls out and even if I'm very careful, it falls in a windzug to already. I had taken a stand function brought me once a keyboard with nice lighting and the like ... should have a tablet who Xperia fingers let them !!!