Exporting FO4 .nif file with collison in 3ds max 2016, Question.

[Pyrsof]

i use 3ds max 2016 and nif tools plugin 2.8.0.0

 

in Skyrim i remember creating objects and exporting them as .nif and there was an option to include collision

like this

 

in Fallout 4 this option is grayed out

 

 

why is that happening and how to fix it?

is there another way to add collision to objects?

[Mish00]

Isn't collision already ticked in the Fallout 4 image? Its grayed out but it is ticked?