detecting empty fields in XML trough FLASH AS2

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I have this simple XML file, witch I'm calling in a SWF file. This is the code: \[code\]<goals1><minute>32</minute><name>Name</name><minute>35</minute><name>Name2</name></goals1>\[/code\]So these nodes are going to be empty. They are even not going to exist. But I'm going to put the paths in to the AS2. So my question is: - What to do to make them not showing "undefined" in the swf file. In other words I need to display content when there is any.Thank You!