How can we use Core HR Related DBI(Person Type) in ORC formula?

Summary:

I need a help to understand if we can use PER_EXT_PER_TYPES_USER_PERSON_TYPE in FF type Recruiting Candidate Selection Process.

We have a business requirement to auto reject the internal candidate who having person type "Trainee" and I have written below FF, However, its rejecting all internal candidate. 

DEFAULT_DATA_VALUE FOR PER_EXT_PER_TYPES_USER_PERSON_TYPE IS 'Employee'

DEFAULT FOR IRC_CSP_JOBAPP_INTERNAL IS 'N'

 

i = 1

WHILE PER_EXT_PER_TYPES_USER_PERSON_TYPE.EXISTS(i) LOOP

(

CONDITION_RESULT = 'N'

ASG_USER_PERSON_TYPE = PER_EXT_PER_TYPES_USER_PERSON_TYPE[i]