Changes

"Use Content RulesContinue?" must be turned on.

"Content Continue - Field to match on" provides the field to look at to match for the code. Usually the Id field is enough. The but if you're creating custom reference codes, the engine also accepts any form field must only contain numbers regardless.

"Content Continue - Match pattern" is the pattern to look for. The setup will be along the lines of ###--ID--#The pattern needs --ID-- in it somewhere to locate the reference code.