Yes I am using the editor, but where is the option in it to enable the Jackpot Jacky thing? It even mentions it in the info tab but I don't see anything labeled Jackpot Jacky anywhere.
Make sure you're using the Newest release of the Editor.
The Jackpot Jacky option is in the 4th tab down, Misc. tab.
Jackpot outcomes are in the drop-down list. You select which jackpot you want to get, then click the ACTIVATE button just above the drop-down list.
Along with using the "golden key" option of the Trainer, which also makes the slot machines free, is by far the best idea for hitting it big Vegas-style!