XML import problem

Hi,

I'd tried to made InDesign file from xml file import from app that gives InkCoverage for a PDF, similar to this example : 

But I've nothing when I select element in Structure and drop it onto my document.

Is it because there's something wrong in my imported xml file ? 

I read few documents about import xml files, and each time they drop onto the file they have text, but I have only brackets....

Thnaks for little help, 

Regards,

Christian