Getting the name of the parent node

Sometimes you'll need the name of the parent/container node that you're working in. It might be a "car_01" or something like that.

What you need to do is trick a wrangle into using houdiniscript. We do this by creating a parameter/channel and then typing in the script we wish to run, enclosed with backticks ` `

opname is the function we want to run and .. will get us up a level.
so in the wrangle use

s@string_name=chs("whatever");

hit the create-channel-box button, then type this in it

`opname("..")`

you now have a string value of the parent node that you could strip/atoi, whatever.