Pull Data from another attribute in Extract into a Fast formula

 /*******************************************************************
FORMULA NAME : GET_WORK_EMAIL_FF
FORMULA TYPE : Extract Rule
 DESCRIPTION : Get value set value for Email
Change History:
Name                   Date         Comments
--------------------------------------------------------------------------------------------------------------------------

*******************************************************************
*/
DEFAULT FOR DATA_ELEMENTS IS EMPTY_TEXT_TEXT
INPUTS ARE DATA_ELEMENTS (TEXT_TEXT)
l_per_id = ' '
/* To retrieve 'Data element' from attribute */
 
IF (DATA_ELEMENTS.EXISTS('Person_ID') ) THEN
(
   l_per_id = DATA_ELEMENTS['Person_ID'] 
    
   rule_value = GET_VALUE_SET('GET_WORK_EMAIL_VS','|=P_PERSON_ID='''||l_per_id||'''')
   
)

RETURN rule_value