Selecting a file to load from a directory

With the current code the file path/ directory was already present. What im trying to do is add in a drop down menu that will allow the user to select one of the multiple files saved in the same directory/ folder to be loaded. Can anyone assist?
Attachments:
FILE SELECT 2.vi ‏13 KB

Thank you for your reply. What im trying to do is while the program/ subvi is runing the user will select a file from the combo box/ drop down menu and hit load. This will select one of the multiple files in the directory and load it into the rest of the program. This section of the code is to load the hardware device with list of numbers from the file that is selected. I only have 3 but it can be up to 200 files.

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