Midnight's Darkness

hi guys, 
i want this extra item for ZP 4.3 i found it only for 4.0

#include <amxmodx>



#include <amxmisc>



#include <hamsandwich>



#include <zombieplague>



#include <zmvip>







#define DEF_LIGHT "g"







new item_md, md_used, cvar_duration







public plugin_init()



{



register_plugin("[ZP40] Midnight's Darkness", "1.0", "ShaDoW")



register_event("HLTV", "event_round_start", "a", "1=0", "2=0")







cvar_duration = register_cvar("zp_midnight_duration", "0.0")







}



public plugin_precache( )



{



item_md = zv_register_extra_item("Midnight Darkness", "Special", 50, ZV_TEAM_HUMAN)







precache_sound("ambience/alien_hollow.wav")







}







public zv_extra_item_selected(player, itemid)



{







if (md_used)



{



client_print(player, print_chat, "[ZP] You can buy this only 1 Time.")



return ZP_PLUGIN_HANDLED;



}











if (itemid == item_md)



{



client_print(player, print_chat, "[ZP] You bought Midnight's Darkness, Everything goes dark now.")



set_hudmessage(255, 10, 10, -1.0, -1.0, 2, 6.0, 12.0)



show_hudmessage(0 , "The clock struck twelve and here comes the wrath of zombies")



set_task(10.0, "md_start")



}



return PLUGIN_CONTINUE



}







public event_round_start()



{



md_used = false







server_cmd("zp_lighting %s", DEF_LIGHT)







}







public md_start()



{



md_used = true







server_cmd("zp_lighting a")







client_cmd(0, "spk sound/ambience/alien_hollow.wav")







if(get_pcvar_float(cvar_duration) > 0)



{



set_task(get_pcvar_float(cvar_duration), "md_end")



}



}







public md_end()



{



md_used = false







server_cmd("zp_lighting %s", DEF_LIGHT)



}