(Optional) Be sure that the Watches window is visible or choose Window > Debugging > Watches (Alt-Shift-2) to view it.
If you want to enter an XPath expression from your BPEL process, copy it using one of the following methods:
In the Source view, copy the XPath expression you want to watch. The XPath expressions can be found inside the <condition> tag.
In the Design view, select an element that has an expression and copy the expression from the Condition row in the Properties window.
Right-click inside the Watches window and choose New Watch.
In the Watch Expression field of the New Watch dialog box, do one of the following:
Paste the XPath expression you have copied.
Enter any valid expression that is compliant with XPath 1.1.
(Optional) If needed, add more watches.
Ensure that a debugging session is running and perform a test run.
As the process instance reaches a breakpoint and becomes suspended, examine the values of the expressions being watched in the Value column of the Watches window.