SSIS Variable Expression not Picking Up the value dynamically set from a Foreach Loop container

Hello, everyone,
I have three variables in my SSIS package:
1) ReportLoc that holds a file path (c:\test, not changed)
2) ReportFileName that holds a file name that get assigned in a Foreach Loop container (file1, file2, etc.)
3) OutputFilePath that is the full file pathname, set in the expression: @[User::LocalPath] + "\\" + @[User::ReportFileName]
All three variable have the package scope.
I expect OutputFilePath will be asigned values like c:\test\file1, c:\test\file2, etc.
However, it alwasy remains an empty string.
Anything I did wrong? Any help and information is greatly appreciated.
Regards

That's it -- I forgot to set Evaluate as Expression to true.
Thank you very much for your reply and solution! Really appreciate it!
Regards.

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SSIS Variable Expression not Picking Up the value dynamically set from a Foreach Loop container

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