Pulling Last Modified Date of Sharepoint File

Hello,

I have trying to build a query that pulls in the last modified date of an Excel file located on a Sharepoint site.  I ended with with a working query, but it has started to fail on me.  Looking at the M code, my guess is that it's pulling in the most recently modified file (the 0 index after it's been sorted descending) as opposed to pulling in a specific file by name, GUID, etc.

How could I update this query to be locked to the file I want?

Thanks for your help!

let
    Source = SharePoint.Tables("https://bmo.sharepoint.com/teams/XXXXXXX/Sharepoint Site", [Implementation=null, ApiVersion=15]),
    #"c26cac6a-c4a9-4a7e-a55c-XXXXXXXXXXXX" = Source{[Id="c26cac6a-c4a9-4a7e-a55c-XXXXXXXXXXXX"]}[Items],
    #"Sorted Rows" = Table.Sort(#"c26cac6a-c4a9-4a7e-a55c-XXXXXXXXXXXX",{{"Modified", Order.Descending}}),
    File = #"Sorted Rows"{0}[File],
    #"Converted to Table" = Record.ToTable(File)
in
    #"Converted to Table"