EGL在处理程序中创建iframe

我使用egl丰富的ui。我有一个处理程序，我尝试在其中添加一个iframe。我找到了一个代码示例，但这不起作用。下面的代码出了什么问题

handler Test type RUIhandler{initialUI =[ui], onConstructionFunction = start, cssFile = "css/test.css", title = "Test"}

ui Div{padding = 10, children =[Box, BoxDataGrid, iframe]};

iframe Widget{tagName = "iframe", width = "500", height="100"};
 function start()
    iframe.setAttribute("src", "http://www.google.gr");
end

end

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也许是网址。谷歌禁止在iframe内使用其网站。Follownig代码有效

handler test5 type RUIhandler {initialUI = [ iframe ],onConstructionFunction = start, cssFile="css/frommclient.css", title="test5"}



iframe Widget{tagName = "iframe", width = "500", height="100"};
 function start()
    iframe.setAttribute("src", "http://www.frommedv.de");
end

end