Refresh XML data in a Map if the source file is updated

Hi,

If I have a spreadsheet with some data loaded in through XML and viewed as a
map, what is the VBA command to reload/reimport the source XML data?

The scenario is that the source data (XML) may change at any time, and I would like to reflect this to the presentation layer (excel) at regular intervals. I have a loop set up but cannot find the command to reset the source XML data.

Thanks in advance,

Nick