How to position Block Insertion Point using x,y coordinates?

Solidworks created a Block from a dwg.  It seemed not to have a predefined insertion point.

I am able to extrude the block, and find the centroid of area of the end face of the solid, in x,y coordinates.

I tried but failed to get the centroid of area of the block.

I want the insertion point at the centroid of area, but I am stumped.

SolidworksSketching