How to edit Test Sequence/Assessment block parameters via code

I'm currently writing a script to automate creation of Test Sequences and Test Assessments based on external data I have. I can edit my blocks in my script to add all the required inports/outports I need on my Test Assessment/Sequence blocks, as well as populate them with my test vectors and expected results.

My issue is that when I try and run my auto-generated model, I get errors on the symbolic inports/outports from my Test Sequence/Assessment blocks that are due to the size and type parameters being set to the defaults. Everytime I generate my model, I have to manually change these by hand. I've gone through the get_params for this block, and none of the options gives me access the parameters I need to change, as I could with other blocks (like normal inports/outports). I'd also like to enable the 'Log Signal data' option as well if possible.

Any options?