change spatial reference of wmts layer

i would like to change the spatial reference of a WMTS layer.

 

This is possible in ArcGIS by changing the Tiling Scheme (which affects the spatial reference), but I don't see a way in Geocortex. Geocortex picks (randomly) a spatial reference.

 

Is there a workaround to change the spatial reference?

 

Thanks!

 

inge