Im using a 3D based Procedural Noise shader (Redshift RS Noise) and trying to use it to drive a Bump Mapping on a Mesh. I need to create a Vertex Attribute and copy the UV data onto that. Ive tried Copy Attribute and various other nodes but cant get the data to flow correctly in. Im using Spreadsheet to visually confirm the custom made Attribute has no data in it.

What is the workflow for this?