From where did you get the SVG Extension? You are aware the latest versions of QlikView support KML now, that may be another avenue for you here in that case. November 2017 and later have KML support.
Regarding the extension, the best bet would be to go to who posted the extension for assistance, but I suspect the underlying map they are using does not have what you need in this case, so you may have to go another route in that case. This is my hunch on this one.
The Qlik GeoAnalytics add-on may be another option as well that would be much better suited for your use case as well: