Past 3 Months Expression

[salleninsd]

Hello, rookie question:

I am trying to have a graph that shows a timeline of the past 3 months and am using the following expression.  When I break the expression into singular parts, they work fine (as indicated in the blue text boxes).  I selected dual MonthAbbr in the load script, and my graph indicates "No Data to Display".  Am I writing the following script in the correct syntax?  I am using the personal version of QlikView, so I cannot attach the file.  Any feedback is appreciated!  Thank you!

sum({$<MonthAbbr={'>=$(=Max(MonthAbbr)-2) <=$ (=Max(MonthAbbr))'} > } SalesAmount)

[jwjackso]

I believe the $ expansion uses double quotes.  See this blog The Magic of Dollar Expansions

[salleninsd]

Hey Jerry!  Thank you so much... it worked for me.  I really appreciate your help!!!

[shiveshsingh]

Try this

sum({$<MonthAbbr={">=$(=Max(MonthAbbr)-2) <=$ (=Max(MonthAbbr))"} > } SalesAmount)