Morning,
I have been struggling with this particular quandary and I know i am close to the solution but could use some help.
I have a sharepoint list set up that allows users to upload documents to it. The sharepoint list has a couple of flows attached to it. The first of which looks to see if one of the list fields "Document Library URL" is populated, if not it will go off and create a document library and place the URL in that field.
The next flow i have looks to see if any attachments have been added to that list item and then copies them to that document library and deletes them from the list, this works well for the document libraries created by the first flow, as i control the naming convention and know the top level file path, as the document libraries are all created in the same place.
The issue i am facing is one where a document library already exists. What i want to be able to do is send the document to the URL identified in the list field. However using create file against that dynamic content throws an error my current flow looks thus:

One of the options i looked at was moving the attachment content to a holding library then using a move files command to move it to it's destination, but that hit a similar issue around the dynamic url.
Does anyone have any clues? Please.