[solved]How to make a new crafting table GUI open?

[cammygames]

I am trying to create a custom crafting table that will allow you to make the blocks from my mod such as Blast wall i have got the code from the vanilla workbench to try and learn from it and see what i need but i can not get the GUI to open on the block here is my code

i am wondering if i am missing any classes hope you can help me