PREV_DAY_OF_WEEK

Returns the previous day of the week closest to the specified date

PREV_DAY_OF_WEEK (date, day)

Cannot be used in the condition of a FIND action.

An expression producing a date and a string identifying the day

Date: the closest previous date that falls on the named day of the week.

Object.PrevDay = PREV_DAY_OF_WEEK (CURRENT_DATE, 'Tuesday')  
/** This returns previous Tuesday from current date*/