DustTag to openFrameworks viewer??

I’m new to all of this. I just did some test on my iPhone, uploaded it to http://000000book.com/, downloaded the .gml file (was a gml.xml on my computer, but deleted the .xml extension) and I just can’t see it in the openFrameworks??? My folder load (I can see the name of the folder on the corner of the viewer) but id doesn’t display my test.

How do I do to view what I did on DustTag in openFrameworks??