Open document with input control

Hi,

We have State, Product Type and quantity in reportA but table is with Product Type and Quantity only and we have input control on State,

We have Product SUB Type and Measure1 in reportB. We are using open document on 'Product Type' in report A. When user click on 'Product Type' then Report2 will display with respective Product Sub Types..

But we have inputcontrol on State in reportA. So if we have State 'Texas' data in reportA then, when user click on product type it should display respective Product sub types only for Texas instead of all. (I mean Input control should influence ReportB also).

I am able to pass Product type but how can we take the state from input control in reportA and pass it to Report B?

Any suggestion please?