Dear @laplacian,
That’s correct in principle. Please note a few technical details that you might check, for example, at this post → GCR extended layers and scoring through mgdraw file - #3 by ainfanti
In particular, please note the normalization issue mentioned in the above post when creating new regions and request USRTRCKs.
Please note that in the screenshot you have posted it is indicated PION- while I understood you are interested in PION+. In addition, you should replace @ALLREGS with the name of the region attributed to the new Lithosphere layer (if specifically interested in this region).
Cheers,
Angelo