Help With Matrix Report And Design

I've got this data source that returns member information.. great.


I've got a function that when passed the member number and a month/
year returns days participating in the club.





I need to build a report that will output some of the columns for the
member, but then report other information for 6 months for each member
that all calulated based on days particpating for that month. Which 6
months will be dertimed by a single parameter passed to the report for
starting month/year... basically the next 6 months.


Is a matrix report a good option for this? Or should I just have the
function called 6 times in my data source? Ideally I layout the report
for one month and then *somehow* join in my data source for 6
iterations where month is 1 through 6.





Right now I'm having trouble wrapping my mind around how and where to
join the data? Especially if matrix and I have two data sources. I'm
also not sure I can call my function from cells in the matrix or if I
can even have mulitple data buckets in the matrix. I'm tempted to do
this the only way I know how, but I suspect there is a better way.





I've never built a matrix report in ssrs, any information or help is
appreciated.




Thank you!