[Solved] Pin an Object to Another Instance of Itself

I want to build polygons from lines, which are sprites.

I would like the lines to pin to one another, so that the polygons can be moved as units.

Any suggestions? I'm trying using families but having no success.

Families is the way to do it. Pick one object as the Family object and the other as the Sprite.

This is what I'm doing. Any suggestions?

Can you post a CAPX?

Fixed - those events work - but not in the same event that creates the Line sprite objects! D'oh.