Ikea glass drawer Add-on side HELP

[Humphrey2004]

Please I need help. We have a lovely new ikea kitchen that our builder has fitted. He did not fit the glass panels that are meant to go on the side as he couldn't get it to work. Neither can myself or DH. My DH 's patience has just run out. I have trawled google and youtube to see any instructions and there are none. None came with them. It cannot be that hard but we cannot work them out. We can clip them in but they don't stay there. Does anyone know what I am talking about and has managed to fit them successfully? please help. It's these
www.ikea.com/gb/en/products/kitchen-products/kitchen-organisers-shelves/maximera-add-on-side-for-drawer-medium-glass-art-30238859/

thanks in advance xx

Can you take actual pics please

Yes, pictures of what you have and the drawers as assembled so far will help.

Has the drawer front been fitted?

Worst case, take a drawer and side into ikea and get them to show you how!

we have solved the problem
He was using the glass sides from a box which had a couple of bits missing hence it was not working.....
panic over.
bit fiddly to do but doesn't involve tools.
thank you everyone for your help xxx