undefined String problem

I'm using GWT 2.10

My app client code calls the server to get the ip address of the client.

Testing locally, I have this snippet

String lp = remoteIP.getIP();

Window.alert(ip);

 the pop up says 127.0.0.1 as expected, but  trying to include the ip string in some HTML output gives "undefined" as output.

So how to get the same value in some HTML to be displayed in a FlowPanel as in the alert popup? I tried to use the StringUtils.javaScriptString() method, but that does not effect the situation.

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