How to change date format while exporting as a csv file?

I use below code and its working fine. I don't want to change temp table field(dActiveDate) type but please help me to change the date format.

Note - Date format can be changed by user. It can be YY/MM/DD or DD/MM/YYYY or MM/DD/YY and so on...

DEFINE TEMP-TABLE tt_data NO-UNDO
FIELD cName AS CHARACTER
FIELD dActiveDate AS DATE.

CREATE tt_data.
ASSIGN
tt_data.cName = "David"
dActiveDate = TODAY
.
OUTPUT TO value("C:\Users\ast\Documents\QRF\data.csv").
PUT UNFORMATTED "Name,Activedate" SKIP.
FOR EACH tt_data NO-LOCK:
EXPORT DELIMITER "," tt_data. /* There are more than 15 fields available so using export delimeter helps to have less lines of code*/
END.
OUTPUT CLOSE.

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