set analysis in bar chart

[adiarnon]

hi,

i have a bar chart with a dimension of month_sales

i have a mesaure of purchase that conect to a dimention of month_purchase

my chart dimention is month_sales and and the expression is aum(sale_amnt)

but,

i want to add a expression of sum(purchase_amnt)

but i need that the value where the month_sales dimension =11/2015

it will show the sum(purchase_amnt) where month_purchase=11/2015

* i dont want to change my schema

somthing like-

sum({Purcahse_MONTH={(Sale_Month)}>}SO_Purchase) ??????

[sunny_talwar]

I guess are you able to share a sample?

[adiarnon]

i cant

by this is my scheme

[adiarnon]

sum({<SO_SAVE_MONTH={"(=SO_SAVE_MONTH=[Save Month])"},[Actual Calc]=,Year=,Month=>}SO_QTY_DEL)

this is the expression im tring to built

my dimention is [Save Month]

and i need the sum(SO_QTY_DEL) in this month but with SO_SAVE_MONTH

i cant insert the SO_SAVE_MONTH to the key table...