The following example shows two assignments being performed, first copying between two variables of the same type and then copying a variable part to another variable with the same type as that part.

<assign>
   <copy>
      <from variable="c1"/>
      <to variable="c2"/>
   </copy>
   <copy>
      <from variable="c1" part = "address"/>
      <to variable="c3"/>
   </copy>
</assign>

The BPEL file defines the variables, as shown in the following example:

<variable name="c1" messageType="x:person"/>
<variable name="c2" messageType="x:person"/>
<variable name="c3" element="y:address"/>

The WSDL file defines the person message type, as shown in the following example:

<message name="person" xmlns:x="http://tempuri.org/bpws/example">
   <part name="full-name" type="xsd:string"/>
   <part name="address" element="x:address"/>
</message>

For more information about this code example, see Section 9.3.2 of the Business Process Execution Language for Web Services Specification. For BPEL 2.0, see Section 8.4.4 of Web Services Business Process Execution Language Specification Version 2.0 for a similar example.

For more information, see Assign Activity.