Help to create an item purchase page

I need help to develop a page to select different products in UI Designer, I can bring the products registered in the bank and display them in UI Designer:
https://drive.google.com/file/d/0B8aMiLwwVY0nN1lXNFF2SU92TFE/view?usp=sh...

But when I add another line as if to select another item in the order, the second line is already filled with the same data as the first line:
https://drive.google.com/file/d/0B8aMiLwwVY0nd1VoZC1TVXJrUGs/view?usp=sh...

I've already tried everything that is place but I did not find anything that could give me an idea of ​​how to solve this, if you have any idea thank you.