Formating Date From 'YYYY/MM/DD' to 'DD-MON-YYYY' in XMLP(RTF)

<?xdofx:(substr(PAYMENT_DATE,9,2)||'-'||decode(substr(PAYMENT_DATE,6,2),'01','JAN','02','FEB','03','MAR','04','APR','05','MAY','06','JUN','07','JUL','08','AUG','09','SEP','10','OCT','11','NOV','12','DEC')||'-'||substr(PAYMENT_DATE,1,4))?>