Dynamically change source file in PQ

Hi
Can someone guide me how to dynamically change the source of a Power Query; My source files are in a folder. I am trying to change the source of the query by typing the file name in a cell. I found few videos which takes all files from the folder. But I need to use a single file as my data source. This source files are created on a weekly basis with a date suffix.
Thank you very much
Any help will be highly appreciated.

Thank you for the reply.

No - I need a flexibility to choose historic files also. I found a way to do this with latest file . That does not meet my requirement

Maqbool

Thank you Ali.

Finally, I managed to do this. Thanks a lot for the help.

Regards,

Maqbool