BizTalk 2010: Access Context In Map

Question

This could be a very basic question, but hopefully someone will be able to answer it.

I am receiving messages (HL7) using a custom receive pipeline. Inside my custom pipeline, I am promoting properties into the context. I have set up a map where I need to access these properties. However, I would like to access these properties on the send side. The reason why it needs to be on the send side is because I am attaching my map to the send port, so I assume that the message will have already hit the MessageBox and will be mapped on the send side. Hopefully that makes sense...

I know that there are a few 3rd party tools I can use, but I was hoping that there's a simple functoid, or some code I can enter in a scripting functoid that will access the context for me.

Would someone be able to point me in the right direction with this?