Value Set for an Element Input Value not working

Summary:

Value Set for an Element Input Value not working
I created value set " EMP_CHILDREN_VS"
Module : Global Payroll
Validation Type : Table
Value Data Type : Character

when i add element entry to employee and need to select Input Value Child 1 Name , should be showing data
but there is no data showing

FROM Clause :

PER_CONTACT_RELATIONSHIPS, PER_PERSON_NAMES_F_V,PER_USERS, PER_PEOPLE_F

Value Column Name :

SUBSTR((PER_PERSON_NAMES_F_V.DISPLAY_NAME||' - Birthdate: '||PER_PEOPLE_F.DATE_OF_BIRTH),1,150)

WHERE Clause :

PER_USERS.person_id = PER_CONTACT_RELATIONSHIPS.PERSON_ID
--AND UPPER (PER_USERS.USERNAME) = UPPER (fnd_global.user_name)