Has anyone been able to customize SuiteSuccess' Invoice Collection WF? We have the following up and I'd like to see Level 4 triggered in weekly cycles. The Condition set for level 4 is:

ROUND({today}-{duedate})>={custworkflow_atlas_fourth_email} and {custworkflow_atlas_fourth_email} is not null and {email} is not null

Currently we see just 1 email go out with the 4th notice and the workflow ends. Has anyone else had luck with this?