Traveller world builder

[spank]

I've been playing around with the Traveller world builder:

Traveller Worlds

A generator of extended world maps and star systems using the Traveller5 RPG rules, with Official Traveller Universe data drawn from travellermap.com, user entered data, or randomly generated data.

www.travellerworlds.com

It's pretty impressive, reminds me of Heaven and Earth.
I like the ability to customize the star systems, but there's one thing I'm still trying to figure out.
Is there a way to force the tile sets for the world maps?
I'm playing around trying to make and Ice world and it keeps building the map with liquid oceans, even if the world temp is -100C.
There should be some way to force an ice world tileset, but I'm not finding it.
For example this world should show a world with an iceworld map, but it's a garden/ocean world tileset.

 

[Spinward Flow]

I think your answer is there in the image you posted.

Orbit: 7.4 @ 14 AU
This is only possible with an excessively luminous star (we aren't talking G2 V here).

Upper temperature limit: 1319º C
Yeah, I've got no explanation of what kind of math error produced that result.
But this parameter could quite easily prevent the world from forming ice sheets.

As an experiment, you should try modifying the axial tilt (27º) towards 0º and see if that produces the (wanted) polar ice caps.
Another experiment would be to modify the orbital distance, pushing the world away from the star, further out into outer orbits. At some point, you should see the Upper Temperature Limit start to come down and ice caps start forming towards the poles.