Double hinge - open around only a single axis at a time?

[EZ-now]

Hi there,

I have a double (two way opening) hinge. Both axes open to 180deg.

I can't work out how to prevent the both axes from opening at the same time and the hinge becoming elongated. I'm sure that it is a simple amalgamation of Mates but I can't figure it.

I have the hinge axes mated as Hinge Mates including a 180deg range limit and have tried using path mates with the vertices on both the outside hinge plates and the inside hinge plate with a vise versa for the paths.

Cheers

EZ