The Field / Set To panel is used to update each field of the current record selected in the Select List:

Each field in the Field column should be selected and one of the update options below selected. The update options are: String, Variable, Null and Don’t Update. The illustration above, shows at least one example for each update option e.g. ID is set to Don’t Update; Size to a Variable; Colour to a String; and PocketOut to Null.