Link to request body

[IeuanWalker]

I've looked but don't think there is a way to get a value from another request body, like you can with the response body.

For example, I have an API that allows people to add icons to a map.
When the case is closed, they call another API to set the icon status to closed.
And when they want to remove it from the map, they call another API.

Would be good too link the case id from the AddIcon request body, in the close/ delete API's.