Was wandering if someone could assist us with a more advanced Outlook to SharePoint Flow.
We have successfully created a Flow that when a new email arrives it pops it into a document library / folder base on the subject;

ie in above if the subject is /Reports/FolderA it places the file in the FolderA folder in the Reports document library. If the folder does not exist it creates it.
We would like to expand this to dynamically include subsites, ie if the subject is /SiteA/SubSiteA/Reports/FolderA but unfortunately the below does not work;

We have attempted to use a Compose, splitting the Subject of the incoming email into an array by '/' but it does not work, possibly because we are doing it wrong or becuase the Flow is limited to Attachments;

Was wander if anyone had some thoughts. Currently we have to set up an mailbox per target site - ideally we would like to have this more dynamic from the subject - /SiteA/Reports/FolderA vs /SiteB/Reports/FolderA.
Another alternative we have tested unsuccessfully is via setting the target mailbox with multiple email addresses eg reports.sitea@tennant and reports.siteb@tennant - but have struggled getting Flow to detect the email address - rather it seems to work of the mailbox.
Any assistance or thoughts appreciated.
Regards,
Aaron