#include sdktools

public OnPluginStart()
{
    HookEvent("upgrade_pack_used", EventP);
}

public Action EventP(Event event, const char[] name, bool dontBroadcast)
{
    int i = GetClientOfUserId(event.GetInt("userid"));
    int ui =  GetClientOfUserId(event.GetInt("upgradeid"));
    float origin[3];
    GetClientAbsOrigin(i,origin);
    origin[2] += 4;
    new pack = CreateEntityByName("weapon_ammo_spawn")
    DispatchSpawn(pack);
    DispatchKeyValueVector(pack, "origin", origin);
    AcceptEntityInput(ui, "kill")
}