When using the subtract -1 from the current month will the Year also be accounted for when the current month is January and previous month is December?

Thanks for the Example!
I also have found that the Print task w/the If condition will also give me the ability to produce the text file that we are trying to accomplish.

I need to know if it is possible to write out a custom log to a text file. We need to write out to text file with messages about the processing of the tasks in the Job outside the technical log that is generated by the execution of the job. Example: If the job finds the files as expected -> Log out ...