Can you parent a ambient_generic to a moving object?

[That's the plan]

Yeah I know, another thread, but I promise this is for a good cause.
So I was trying to parent a ambient_generic to a moving elevator, but the entity dosen't have a "parent" property available. Any other possible solutions?

 

[ficool2]

You *can* parent the ambient_generic (you need to use my FGD or add it in manually), but you should use the SourceEntityName value instead

 

[That's the plan]

Use SourceEntityName keyvalue.

I tried doing that, and the sound played but it was super quiet.