Flow Action - Convert Word Document to PDF

I'm trying to use the Convert Word Document to PDF action in a Flow. There are three parameters that have to be entered:

• Location - the SharePoint Site
• Document Library - Library where the document is located.
• File - The document to convert

The parameter that I'm having an issue with is the File. The flow works if I choose the specific document from the library but I want it to be dynamic so that when the user starts a Flow on the document it will convert that one, so I don't want to hardcode the document name.

For the File property I'm using the property from a previous step with the file name called File name with extension.

When I run the flow I get an error, "There was an error accessing the file. Please try again or select a different file."

Can I not use dynamic content for the File property?

Thanks