Any way to use tools on NPCs?

Now, I did search this before and got no results.

Is there any way to use normal tools, such as rope and thrusters, on NPCs?

For example, I would like to load the half life 2 maps and rope a metro cop to a city scanner.
Already tried using bone merge but no results so far.

You can’t use constraints on NPCs… I think it’s an engine limitation and it just doesn’t work.

ah, fair enough. Well, thanks for the prompt reply =)