Pass parameters into Workflow Action Script?

Hi all,

I'm creating a workflow that will fire on a transaction import, then run a saved search for the newly-created transactions.  The search results will include information about the transactions as well as the customers for those transactions.  Finally, I want to run a mass update to populate some fields on the customer record with transaction data from the saved search results.

Right now I'm working on the middle step - running the saved search.  I'm creating a custom Workflow Action, and I'd like to be able to pass the saved search internal ID into the Workflow Action Script.  So if, in the future, we decide to create a different saved search, I can just change a parameter (maybe on the script record?) rather than having to hardcode the ID into the script.  Is this possible?