Hi John,
LenX is a size, but you said "move" and position which is a little confusing. Do you want to have the component snap to a position, or snap to a length when scaled?
If you want the position to snap to a grid, you would use the X, Y, or Z attribute.
Maybe:
X: =floor(current("X"), 600)
[image: y9ut_2015-03_244.png]