Combined report having 2 different subject areas and column filter

 Hi,

I want to combine two reports from Different subject areas using combined analyses techniques.From fist subject area 'Sales-

CRM Customer Overview' I have taken two fields 'Opportunity Id' and 'Customer Name' and third column is null and created a 

filter  ‘Customer Name column is Prompted’.From Second Subject area which is Custom subject area I have taken 'Opportunity 

Id' and 'Order Name' and one null column.I want to display combined result as 3 columns 1.Opportunity Id 2.Customer Name and 

Order Name.I have also created One dashboard prompt with filter for Customer Name Column,and placed dashboard prompt and