I'm trying to use the system date token in a Change Data Value flow. The marketing campaign is triggered by the open of an email. We'd like Marketo to record the date in which the person FIRST opened ANY email. We use the field "Opt In Date" to measure this.
Smart list Trigger: Opened email = Any
Flow Change data value: If "Opt in date = empty" "Opt in date = {{system.date}}"
I have this set up already in an activated marketing campaign and this rule keeps getting ignored because the token is invalid.