From the Output or Input panes of the BPEL Mapper, expand the node for the variable to which you want to add an NM property. Right-click that variable's Properties directory node and then select Add NM Property Shortcut.
The Add NM Property Shortcut dialog box appears.
Enter the information for the new NM property into the Add NM Property Shortcut dialog box, as follows:
Property Name: The NM property name (see each binding component's documentation for available NM properties).
Display Name:The display name for the NM property. This is a user-defined name that appears in the Mapper tree. The display name is optional.
Click OK.
The new NM property is added to the Mapper tree under the variables Properties directory. The property can now be used in assigns and to build expressions.