Change Name of Primary Map Spatial Reference - Projected Coordinates

I'm trying to get rid of the WKID for teh Projected coordinates option in the HTML5 2.8.2 Viewer.

 

_img_ alt="The Projected Coordinates Primary Map Spatial Reference that I would like to alias to something sensible" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=906f20000000CGq&feoid=Body&refid=0EMf2000000E3mk" _/_img_

 

My Basemap is in Projected ED50 UTM31N which has a WKID: 23031 

 

_img_ alt="Primary Map CRS showing up as "Default WKID: 23031 X/Y"" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=906f20000000CGq&feoid=Body&refid=0EMf2000000E3mf"_/_img_

 

I have already added Alternate for the Geographic CRS so they have sensible Names but when you try and add an alternate CRS that's Projected then this doesn't display the coordinates at runtime.

 

Any Ideas how I would alias the Default Projected Coordinates?

 

Cheers,

 

Tom