https://www.infopathdev.com:443/forums/39.aspxNew to InfoPath? Search to see if your question has already been answered. If it has not, then ask it here or the appropriate topic forum.enCommunityServer 2007 SP3 (Build: 31118.962)https://www.infopathdev.com:443/forums/thread/122501.aspxWed, 04 Mar 2020 21:56:12 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:122501Sgt Shagrat0https://www.infopathdev.com:443/forums/thread/122501.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=39&PostID=122501Thank you Hilary, I've thinked something about it. I realize that is not so simple. In other way I'll try to use some rules to do it with a known period of years.https://www.infopathdev.com:443/forums/thread/122496.aspxTue, 03 Mar 2020 20:46:00 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:122496Hilary Stoupa0https://www.infopathdev.com:443/forums/thread/122496.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=39&PostID=122496There is really no easy way to do this in InfoPath. You might just want to create a SharePoint list with this data in it, just prepopulate with a bunch of years, months, start and end dates - probably could create the data for pretty far in the future with Excel and then create your new list off the spreadsheet.https://www.infopathdev.com:443/forums/thread/122490.aspxFri, 28 Feb 2020 17:18:18 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:122490Sgt Shagrat0https://www.infopathdev.com:443/forums/thread/122490.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=39&PostID=122490Hi, I created a dropdown field where I have the name of the months and each month has a value corresponding at his numer of month (e.g. January = 01, December = 12 etc..). In another dropdown field I put the years. I've searching the formulas to fit two other field named "Start_Date" and "End_Date" when I choose between month and year taking into account the leap years. How I can do this? Thanks a lot Toomay