Just try this steps:
1. Firstly, find this part:
PHP Code:
public zp_extra_item_selected(id, itemid)
{
if(itemid == g_itemid_L4dTank)
{
has_l4d[id] = true
print_chatColor(id, "\g[ZP]\n You have bought \gL4D Zombie")
}
}
2. Then, change it into this:
PHP Code:
public zp_extra_item_selected(id, itemid)
{
if(itemid == g_itemid_L4dTank)
{
has_l4d[id] = true
zp_set_user_zombie_class(id, 0)
print_chatColor(id, "\g[ZP]\n You have bought \gL4D Zombie")
}
}
3. Lasty, you must edit this line only:
PHP Code:
zp_set_user_zombie_class(id, 0)
Please, edit the value "0" with the number of arrangement of L4D class in your Zombie Classes menu.
If the L4D Zombie is located at the number 3 of the list, just change the "0" into "2". ;)