Adding .amxx knife to Knife Menu
 

Hello everybody reading this post. If there is a problem with this post like location where it was created, just tell me. So, I found dread nova (OP knife from CSO/CSNZ(by new CSNS)) and I thought about adding it into my server. So I did add it, but the problem is, that I think it is not suitable for Extra Item. The model of it is bugged and after you die, it will still be in your Inventory. My question is, how do I add it into knife_menu.amxx so I can have it in the menu ?

PS: If you do not understand, tell me so I can describe more. I can provide code and other things like this, please, do not be rude or something. I am not a professional coder or anything like that, I am like a beginner to coding in pawn.

Thanks forward for your answer.