Create a new process variable for a receive onMessage, onEvent, reply, or invoke activity as follows:
Select the Properties view of an activity.
Open the Data, Input or Output tab of the activity.
For the Assignment Type, select Single Variable.
In the Variable list, select New Variable.
The variable name suggested is one of the following:
The qualified name of the schema element for a single-part element WSDL message
The local name of the message if the single-part element is an XSD type, such as string
For a multi-part WSDL message, the local name of the message
In the Scope field, select the process or a scope to make the variable global or local.
The Variable Type is derived from the WSDL message definition.