I am resurrecting an older process that worked in an earlier 8.0.X version of the server, and found that the variables that were used at the time are not being populated any longer.
I downloaded the latest beta to validate
I would expect to see a value populated in the bottom panel from the previous invocation of the workflow. The subject, body, Message Id, etc are all populated when tested like this.
I am using it in this case as below. The highlighted portion in the screen shot below which I have hard coded now was previously the variable removing the necessity to update the path should the location change for the mail trigger.
Hard coding the path in this case is working as expected. With the variable empty the resulting files from this workflow node writes the files to ..\Windows\System32 because the returned value was empty.
Chris