case 1: {
#if defined BIOHAZARD_SUPPORT
if(is_user_zombie(id))
{
ColorChat (id, RED , "zombie can't by that !");
return PLUGIN_HANDLED;
}
#endif
if( cs_get_user_bpammo(id, CSW_HEGRENADE) >= 1 )
{
allready_have( id );
return PLUGIN_HANDLED;
}
new money = fm_get_user_money(id);
new costa = get_pcvar_num(g_he);
if( money >= costa )
{
fm_give_item( id, "weapon_hegrenade");
fm_set_user_money(id, money - costa );
}
else
{
nomoney ( id );
}
}

what i do wrong?