Clearing a merchandising evar via process rule [Incident: 140404-000121]
I tried writing a processing rule as such:
If evar4 equals any (Shopping_Cart | PAGE_) then delete the value of evar4.
Pretty simple, yes? As it turns out, since evar4 is a merchandising evar and it's value is set on the product string, processing rules cannot see it or change it.
I would like to be able to access and modify evars and events in product strings from within a processing rule.
Processing rules are so woefully underpowered honestly I don't know why Adobe even bothered and it's doubly head-scratching that they make you get certified for it, despite it being literally the lowest threat level for changing things out of all venues to change things.
I wish they would open up VISTA rules to us instead
p.s. if you can swing it, get your Adobe Analytics implementation into DTM; it will basically render Processing Rules moot.