How to see Fast Formula logs?

Summary:

Content (please ensure you mask any confidential information):

We are trying to make the following Performance Eligibility FF work. We need a way to debug it and I see many similar questions around Oracle forums. Unfortunately all answers seem to be obsolete.

Any suggestion?

l_assignment_id = get_context(HR_ASSIGNMENT_ID, -1 )
l_person_id = get_context(PERSON_ID, 0)
l_sub_dep01 = 'SF01-ORG-SQ1'
l_sub_dep02 = 'SF01-ORG-SQ2'
l_sub_dep03 = 'SF01-ORG-SQ3'
l_sub_dep04 = 'SF02-ENG-SQ1'
l_sub_dep05 = 'SF02-ENG-SQ2'
l_sub_dep06 = 'SF02-ENG-SQ3'
l_sub_dep07 = 'SF03-NWW-SQ1'