Hi @Knowledge_Collector
Welcome to the UiPath Community! (Also, cool username 
)
There is already a topic that discusses the same (or similar) problem with year. Try some of the solutions discussed here:
If you’re new to StudioX, it’s possible that you have used the literal string "YYYYMMDDReport.xlsx" (with the quotes, not without).
If this topic doesn’t solve your problem, I suggest you post a few screenshots or describe the issue with some details.
Please refer to the Forum FAQs about posting new topics