Need to know the DBI with array of all the actions performed on current/primary assignment to be use

Summary

Need to know the DBI with array of all the actions performed on current/primary assignment to be used in Fast Formula

Content

Hello Experts,

we have requirement for one of the Business Entity in Absence Module: 

- Employees should be able to apply Privilege leave only if they are "confirmed"   i.e. "Confirmation" Action is performed.

To do so we are attaching the Formula to validate if the "Confirmation" action has run or not. but when we use the DBI it is giving Latest action performed and have no option to iterate through all the actions and find if the "confirmation" action exists among all the actions performed as of date.