References to Message Properties

In activities within a BPL process, it may be necessary to refer to properties of the message. The rules for referring to a property are different depending on the kind of messages you are working with.

For messages other than virtual documents, use syntax like the following:
```
message.propertyname
```
Or:
```
message.propertyname.subpropertyname
```
Where propertyname is a property in the message, and subpropertyname is a property of that property.
For virtual documents other than XML virtual documents, use the syntax described in Syntax Guide for Virtual Property Paths.
For XML virtual documents, see Routing XML Virtual Documents in Productions.

Literal Values