function gridlist()
if source == butondegiskeni then 
guiSetVisible(gridlistdegiskeni,true) -- yapilacak islem
end
end 
addEventHandler ( 'onClientGUIClick', root,gridlist)

addEventHandler ( 'onClientGUIClick', root, function(b, s)
    if b == "left" and s == "up" then
        if source == denemeButon then 
            guiGridListAddColumn(denemeGridlist, getPlayerName(localPlayer), 0.8)
        end
    end
end)