How do you replace a query result from a master query to a child query?

If you select characterstic value with replacement path then it used the results from previuos query; for ex: let us assume that u have query Q1 which displaysthe top 10 customers, we have query Q2 which gets the top 10 customers for info object 0customer with as a vairable with replacement path and display detailed report on the customers list passed from Q1.