problem in check wind

[☠ RaZeR ☠]

when i hit the marker i want to check if the windows is closed

but the if and else ddint work !

the window is open = true but nothing

and when the window is close = false but nothing come

client !

        addEvent("reward4",true) 
addEventHandler("reward4",root, 
    function () 
    if ( guiGetVisible ( mis4 ) == true ) then 
    guiSetVisible (claim4, true) 
    guiSetVisible (change4, false) 
    fadeCamera(false,0,0,0,0) 
    sound = playSound("song.mp3") 
    else 
    guiSetVisible (claim4, false) 
    guiSetVisible (change4, true) 
    end 
    end 
) 

[0m4r]

put the full code or make sure of windows Name