Help with SP or Function

I was trying to write this MDX but I am getting errors so maybe I should
create a stored procedure against my CUBE.
I want to return two values : Revenue Avg and Product Price Avg by a
specific time and Sales Region.
can someone provide an example?
My cube provides the total revenue for any date. I thought I could take the
avg(Sales Region.members,Time.members, total revenue amount) AS 'Revenue Avg
'
avg(Sales Region.members, Time.members, Product price) AS 'Product Price Avg
'
and get a value but I am getting an error message.What error message? Where?
ML
http://milambda.blogspot.com/