invoke workflow, question about return values

Hi--

I have a workflow that reads a csv file and creates a datatable in the C# script module.  I would like to use the invoke workflow activity to reuse this code in many other workflows.  the input to workflow is an idictionary as is the output. so how would i input the sourcefilename and the rusultant datatable variable? 

something like:

add to dictionary:

"inputfile"

object1  (defined as "C:\tmp\myfile.csv")

add to dictionary

"outputdatatable"

dataTable1 (a defined variable in the invoked workflow  C# script parameters) and in the current workflow)

the returned table is null, but should have records.

so how would you use the invoke workflow activity and return datatables featuresets and other structures, then be able to use those results?

Jeff

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