adding gui function

[Storm-Hanma]

hello all i have scripted a command for warehouse but the problem is i want a teleport button for knife arena in my exist guiwindow!

client.lua :

addCommandHandler( "knife",
    function( player )
        setElementInterior( player, 1, 1401.3, -15, 1000.8 ) -- teleport player to the centre of SA
    end
)

for gui code i dont want to paste here come pm for cilent code of guiwindow,button why i dont want to paste here is members can easy clown my scripts by using my cilentcode!!

please help me guys

screenshoot ; https://imgur.com/WgJR2Qi