I appreciate your effort but I tried to apply, I'm still getting the same output as mine... The requirement is to have like this output (see image). The question is, is it really doable? As you can see in X-axis, date ranges from Dec 29, 2013 to Jan 7, 2014. So here, two Years are involve.
Blue Line is data of Sales as of Dec 29, 2013 to Jan 7, 2014
Orange Line is data of Sales as of Dec 29, 2012 to Jan 7, 2013
I would more appreciate if you could provide sample report that display like chart below? My apology of posting the same image.