The Assign action writes a value to the FactBase.
The Assign action can set values by using two parameters. The first parameter is an XPath which indicates the location in the FactBase to write to and the second specifies the value to write. The second parameter can be either a string value specified directly, or an XPath to the value that should be written into the FactBase.
The location to which the value is being written must already exist for the Assign action to complete successfully. This action will not add to the XML structure at all. If the required structure does not already exist, the Insert and Insert Attribute actions can be used instead.
