[Gta_Killer]

Hello,my name is Gta_Killer and i'm new to scripting.I know these questions aren't for begginers but i would really like if someone can help me:

Question 1:How to install objects?(for example CreateObject(2587, 2001.195679, 1547.113892, 14.283400, 0, 0, 96)

Question 2:How to add a GM and ADMIN script to ModernTopia(i mean to have a /gmduty and /adminduty command and a green checkpoint for GM and purple checkpoint for ADMIN)

Question 3:I found the mtrp-final.amx on net but if i try to compile by myself,i get this error:
D:\Games\Rockstar Games\GTA San Andreas\Servers\ModernTopia\gamemodes\mtrp-final.pwn(9845) : error 017: undefined symbol "SetDisabledWeapons"
D:\Games\Rockstar Games\GTA San Andreas\Servers\ModernTopia\gamemodes\mtrp-final.pwn(37874) : warning 235: public function lacks forward declaration (symbol "OnPlayerPrivmsg")

Thanks for reading my topic and if you can help me i'll be glad !