// - this will clear anything and everything from the cargo (default stuff that generates with the vehicle)
clearWeaponCargoGlobal this;
clearMagazineCargoGlobal this;
clearItemCargoGlobal this;
clearBackpackCargoGlobal this;
// - for weapons use:
this addweaponCargoGlobal ["hgun_P07_F", 1];
// - for magazines/ammo/grenades use:
this addMagazineCargoGlobal ["16Rnd_9x21_Mag", 5];
//for items Medikit/GPS/watch/map etc && all waepon attachments use:
this addItemCargoGlobal ["FirstAidKit", 1];
copy and paste this in the INIT line of the vehicle it (should) spawn nothing put a pistol with 5 clips and and first aid kit.
clearWeaponCargoGlobal this;
clearMagazineCargoGlobal this;
clearItemCargoGlobal this;
clearBackpackCargoGlobal this;
this addweaponCargoGlobal ["hgun_P07_F", 1];
this addMagazineCargoGlobal ["16Rnd_9x21_Mag", 5];
this addItemCargoGlobal ["FirstAidKit", 1];
Hope this helps