Environment variable to hold received message content. Note that a second environment variable "${VARIABLE}_HEADERS" is created for the message headers.

To pass message content by file instead, configure as follows:

• CI Build Trigger
  
  Create a FileParameter on the job with the name of the variable specified here. If you want the message headers as a file as well, create a FileParameter named "${VARIABLE}_HEADERS".


• Job and Pipeline Steps
  
  Check the "Use files instead of environment variables" checkbox. This will create files in the workspace with the same names as the environment variables.