More information is required to help.
As it stands, attempting to research your gun on google, told me that this is a non blow back gun that runs off of green gas. If this is true, that co2 cartridge will do you no good. You will require a canister of green gas, or a propane canister with adapter and you will have to inject the gas into the bottom of your magazine.
If this gun is in fact a greengas/propane operated non blow back, you may find this website helpful.
http://www.airsplat.com/Airsoft-Gas-...structions.htm