how to make 2 measures share MonthDay dimension

[sersal10]

Hi all. 

I have sales data for event tickets from April last year and this year. Is there a way to put them in the same chart and have them overlaid? I tried to load the sold_date field as MonthDay creating that new filed so I could use it as the shared dimension. 

But I see that they can't share it for some reason. I think it links it to the date somehow. For instance I have 2 diferent 03-10 one for last year and another for this year at the right side of the line chart. Is there a way to make them share it? 

The expressions I have for both measures as I need it to be the accumulated sales, are these:

For last year:

=Rangesum(Above(Sum({<year_event=, month_event=, event_code=p(previous_event_code), event_to_compare=, event_name= >} [quantity]), 0, RowNo()))

For this year:

RangeSum(Above(Sum(quantity), 0, RowNo()))

When I load the date the code is:

Date(Floor(sold_date), 'MM-DD') as MonthDay,

And this is the chart now. Notice that after last year MonthDay, follows the beginning of this year:

Any help appreciated!!!

[dmac1971]

Do you have a master calendar in your report?  If not you should read up on them, and add one in.  Good luck.