Date functions in data federator

Dear All,

We are using the MSU(multi source universe) which uses data federator functions.

Requirement is to create the following object

3 digits format (current month - 1).

So it should return 001 now as current month is Feb.

How we can achieve it here as ADD_MONTH function doesnt work here.

We could get it after applying below logic but how to format a date we are stuck.

CASE WHEN (month(curDate()))<=1 THEN concat('0',toString(month(curDate()) +11))

ELSE concat('0', toString(month(curDate())-1)) END

Regards,

SN