You want to use the Attribute: Prism1 (for prism select)

Then a second attribute: Prism1_Pos (for prism index and rotation)

Both of these attributes are found under the Beam Feature.

You will have to assign the Subattribute: Prisma1_Rot to your Prism1_Pos attribute.

Assigning the From/To Phys to this subattribute will give the proper information to MA3D to visualize your prism rotation.

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