Ramp Volume

How can I assign the ramp volume as a parameter

I am trying to make a material schedule of the ramps. I added a shared parameter and tryed to assign its volume by dynamo.

although I can get the volume in the watch node I get a null list when assigning to the ramps

I pulled this from your second topic. In the future please refrain from duplicating topics and build on the one you already have.

It could be that the parameter doesn’t exist, or that the parameter is misspelled, or that it’s read only. Can you post a sample rvt for us to confirm? You may need a 3rd party hosting site such as google drive, dropbox, OneDrive, etc…