Placing Orthographic Cell in Isometric Transformation

I am looking to use CreateCellElement2  to set the rotation using MATRIX3d to place an orthographic cell (square for example) in an isometric orientation 30 degrees for the base and 150 for the vertical lines. This was done in the past versions with place cell TMATRIX. I am an inexperienced programmer with MVBA and haven't had much luck with this method. Any help steering me in the right direction would be appreciated.  I am able to rotate or scale but have not been able to rotate the x axis differently  than the y axis. I hope this makes sense.

Mike