Rigged Straps Penetrating Geometry

Guys Working on a rig, I have been able to rig all successfully except for the straps which I need to figure out a way to constrain so when moving the lid around they stay attached to the box. Here is an image…


https://drive.google.com/file/d/0B0Wu_GWM_oNlckxpT3ZlZDdtanc/edit?usp=sharing

Quick Bump!

I’m not quite sure I fully understanding what your trying to accomplish…

Do you want the Lid to stay constantly attached to the box…?

Or… do you want the straps to stretch as in the screen cap… but just not penitrate the sides of the box?