How do you get code???

Hi
ehmm lool? u won a code from a black market crate sry but it dont give a code in black market crate but maybe i think u mean a coupon? if yeah u can use it in game u must click on game when u online black market then owned and then under the where stands zp crates and gp crates there u can see how much u coupons u have if u have already 10 then u can use to change it for mp5adv for 90 days or other coupons weapens. BTW MY 50 POST !!!!