How to send data from "Get Transaction Data" to "Process Transaction" in RE-Framework?

Hello ,

I have tried as you said. Created a separate workflow and invoked inside first if condition of Get transaction data. But it has thrown error for GET IMAP.(Object reference not set to an instance of object).
I have created 2 arguments:
image

Default in_Config argument is like this:
image

image

Where it is going wrong?