The user can enter any pattern engine language expression as a generator.
To do that just select "Custom Generator" from generators menu and enter the string to "Options" field.

Notes:

• This program provides only limited support for @ and @@ column references due to XML structure complexity.
• Reference by column number (@1, @2, etc) is not supported for most cases.
• Reference to attribute value looks as "NODE_NAME/ATTRIBUTE_NAME".