You are pretty close,
the path you created, is it general? So it is something like
c\users\documents\folder\[here is the file you want to save to?]
If yes, in the"[]" mark, you want to input a dynamic file name. It is you to decide if this file name is exactly the same as what the flow saves in files. the 5 numbers "25678", Have you checked if the flow saves the files as those exact names? Thats what you need and then use those names as input for intopath in activity 4 in combination with filepath. So in the end you will have
Filepath
Filename: make sure this is only 5 numbers, you can check by debugging it at activity 4, and then open the variable.
In combination: %filepath%%filename%, is the value of activity 4. Keep in mind to have a backslash at the end of filepath aswell.