Add a hyperlink to specific page in document to a column in document library

Hi, 

I'm trying to create a flow that creates a hyperlink to a specific page in a document. Here are the steps the front-end user will take:
1. Upload document to document library in sharepoint.

2. Fill out columns with relevant information.

2.a. One of the columns will request they enter a page number.

I would like the flow to take the file path and page number and enter this into a 'Link to specific page' column.

Here is my current flow:

The flow itself is successful, but the link doesn't flow through to the 'Link to specific page' column.

Thank you in advance.