Multi-conditional statement problems

MHS

Hello Everyone, 

I am an Alteryx rookie and am having issues with another one of my multi-conditional statements.  I have tried changing the [created] data type from a date, to an integer, to a string and cannot seem to clear the error message in the formula.  I continue to get the error message "the field ""is not contained in the record".  

If [created]<="2019-01-01" THEN "2018"
ELSEif [created]<="2019-01-31" THEN "January"
ELSEif [created]<="2019-02-28" THEN "February"
ELSEif [created]<="2019-03-31" THEN "March"
ELSEif [created]<="2019-04-30" THEN "April"
ELSEif [created]<="2019-05-31" THEN "May"
ELSEif [created]<="2019-06-30" THEN "June"
ELSEif [created]<="2019-07-31" THEN "July"
ELSEif [created]<="2019-08-31" THEN "August"
ELSEif [created]<="2019-09-30" THEN "September"
Else "Other"
ENDIF

Thanks for the help!

Matt.

john_miller9

@MHS 

Can you upload your workflow?

Without seeing it though, did you make sure to name the field that you added with this formula?  That can cause the error you're getting.