How using JAL can I calculate the last business day of the month prior to current month?

Dim last_day, date, "@MF"mm/dd/yyyy""
Dim is_weekend, boolean
Dim is_holiday, boolean

CHECK_PREV_DAY:
DateAdd last_day, -1, last_day
IsWeekend last_day, is_weekend
If is_weekend, CHECK_HOLIDAY, CHECK_PREV_DAY
CHECK_HOLIDAY:
IsHoliday last_day, is_holiday
If is_holiday, CHECK_PREV_DAY, DONE

DONE:
// here you put your main processing

: How using JAL can I calculate the last business day of the month prior to
: current month?

Code snippet has small bug. See below:

If is_weekend, CHECK_PREV_DAY, CHECK_HOLIDAY

: Dim last_day, date, "@MF"mm/dd/yyyy""
: Dim is_weekend, boolean
: Dim is_holiday, boolean

: CHECK_PREV_DAY: DateAdd last_day, -1, last_day
: IsWeekend last_day, is_weekend
: If is_weekend, CHECK_HOLIDAY, CHECK_PREV_DAY
: CHECK_HOLIDAY: IsHoliday last_day, is_holiday
: If is_holiday, CHECK_PREV_DAY, DONE

: DONE: // here you put your main processing

You are absolutely correct.

: Code snippet has small bug. See below: If is_weekend, CHECK_PREV_DAY,
: CHECK_HOLIDAY