content: function init() 
      m.btn = m.top.findNode("btn")
      m.top.observeField("focusedChild", "OnChildFocused")
  end function
  
  sub OnChildFocused()
  ?"Me pasaron el focus"
      if m.top.isInFocusChain() and not m.btn.hasFocus() then
          m.btn.setFocus(true)
      end if
  end sub
  