What makes a physics-enabled object "grabbable"?

[xTrogdorx]

I've been using a mod called "Grab moveable statics" for a while now, which edits physics-enabled clutter like hand carts and fishing poles so that they can be grabbed (and picked up with telekinesis).

 

However, one of the objects it doesn't alter is the rocks used in falling rock traps. So I set out to fix this.

 

I opened the mod in TE5snip and found that all it appears to edit is the MSTT form for each item. Therefore, it is not editing every reference - and therefore it must be possible to achieve this effect without editing references.

 

So I opened the CK and found the MSTT forms, but there's nothing on the form that looks like it changes whether the object is 'grabbable' or not.

 

Halp?

 

Edit: Here's a copy of the mod.

 

Grab_Moveable_Statics_-_Multilingual-3562.7z