Excel 2010 :: How To Cascade Slicer Selection To Other Slicers

I've inherited a workbook that has about two dozen or so pivots spread over a few worksheets that source data from an analysis services cube.

There are multiple slicers attached to the various pivot tables and charts

Some of the reports (worksheets) have a business rule that certain filters need to be selected in specific combinations for the data that's returned to make sense.

eg the fact table holding the measures has a billmonth and processmonth that's linked to role playing date dimensions. For the report to reconcile the data correctly both the billmonth and processmonth need to be set to the same value. So if I select 2014-03 on the billmonth slicer, I need to set the processmonth slicer to 2014-03 as well. And there's another pivot on the same worksheet that's linked to a different fact table that's at the year grain, and for that bit to make sense it should be set to 2014.

My task is to simplify this by propagating the billmonth value to the processmonth and the billyear, but I haven't played with vba in about 7 or so years, so I'm very out of practise.

How do I use vba to monitor a slicer for changes? and if it does change how to set another slicer to a dynamic .Value? It can be assumed that the value will always exist in the downstream slicers, if it doesn't the user has bigger problems than an excel error.

I've recorded the macro of me selecting the same date on both slicers but it doesn't give me much to go on

ActiveWorkbook.SlicerCaches("Slicer_DimDateBill.DateHierarchyFinancial1"). _
VisibleSlicerItemsList = Array( _
"[DimDateBill].[DateHierarchyFinancial].[Fin Month].&[201403 FM09]")
ActiveWorkbook.SlicerCaches("Slicer_DimDateProcess.DateHierarchyFinancial"). _
VisibleSlicerItemsList = Array( _
"[DimDateProcess].[DateHierarchyFinancial].[Fin Month].&[201403 FM09]")

Also it should disallow multiple selects, is there code to monitor that as well?