Mouse over an item. The script gets the seed pointer. NB! An equipped item always has priority over other items.
Change "Seed" value. From CE help: "There are 2 ways to change a value in the list, by either double-clicking the value, or by selecting it and pressing enter. For all the other items in the list just double click on it and it will open up a new window allowing you to change it."
Put item into stash. At this moment item stats rerolling.