Exclude the Rejected Line items net values in calculating Header Net Value

Hi Friends,

In sales order i have 10 line items, in which i'm rejecting 2 lin items. Net value in header level should be automatically changed

based. Net value at header should be sum of only 8 items means exclude the rejected line items to calculate Header net value.

I have got the include MV45AFZZ so pls suggest on how to achieve the requirement.

Thanks

Bhuvana