SharePoint - Modify the actions within a SPD-built workflow template programmatically?

Does anyone know whether it's possible to modify the workflow actions of a SharePoint Designer workflow template programmatically? For example, one has a SendEmail action and I'd like to modify the values of the To or the Bcc through code开发者_StackOverflow社区.

Thanks in advance

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http://rshelton.com/archive/2008/01/04/how-to-adding-custom-workflow-activities-to-sharepoint-designer.aspx

Good luck

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I've determined that this isn't possible. Closing question