When the person press the check box it's suppose to get the player name and enter it to a Edit Box. 
but when the player press it then the Text is not entered 
Client-side: 
  
-- The Checkbox 
GUIEditor_Checkbox[1] = guiCreateCheckBox(300,29,15,15,"",false,false,GUIEditor_Window[1])-- Nickname 
  
-- The function 
function clientNick1() 
    if guiCheckBoxSetSelected (GUIEditor_Checkbox[1], true) then 
        triggerServerEvent("clientUser1", getRootElement()) 
    else 
        cancelEvent() 
    end 
end 
  
addEvent("clientNick1",true) 
addEventHandler("clientNick1", getRootElement(), 
function(nameNick) 
    guiSetText(GUIEditor_Edit[1], nameNick) 
end) 
  
 
Server-side 
  
  
-- Getting the Nickname 
addEvent("clientUser",true) 
addEventHandler("clientUser", getRootElement(), 
function() 
    local nick = getPlayerName(client) 
    triggerClientEvent("clientNick", getRootElement(), nick) 
end) 
addEvent("clientUser1",true) 
addEventHandler("clientUser1", getRootElement(), 
function() 
    local nameNick = getPlayerName(client) 
    triggerClientEvent("clientNick1", getRootElement(), nameNick) 
end)