Dynamically Change Connection String per User

Hi everyone, 

I'm wondering if anyone can help me with this. Within my organization, we have multiple pbix files saved on OneDrive. Each data source has the original user's name in the connection string in Power Query. Is there any way that we can dynamically change the user name to update to the current user who is working with the file? It becomes a problem when we want to be able to refresh each other's files saved to OneDrive. Any help would be appreciated.

Example:

Source = Excel.Workbook(File.Contents("C:\User Name I want to dynamically update\Path\File.xlsx"), null, true)