Gets or sets the field or the property to be extracted from the associated activity when a track point is matched.
Assembly: System.Workflow.Runtime (in System.Workflow.Runtime.dll)
can be set to specify a field or property of the activity; a member of such a field or property; or a single element of a field or property (or a member of either) that implements the IEnumerable interface. For example, if the activity has a string property named MyString and you want the runtime tracking infrastructure to return its length, you can set to "MyString.Length". Alternatively, to return the second char in MyString, you can set to "MyString".
must be the real name of a property on the activity type. This name may be different from what you see in the designer because the designer supports the ability to localize and map property names.