Flag for last year same period

I have a table with columns , End date period(end date of each period),Start date period(Start date of each period), Period (YYYY-YYYY PXX) .
I have created a measure to identify current year current period(2023-2024 P12) and current year last period(2023-2024 P11).
Current Year Last Period =
VAR MaxDate = MAXX(FILTER('Hold Date', 'Hold Date'[PERIOD_END_DT] + 1 < TODAY()), 'Hold Date'[Release Period])
VAR Year1 = LEFT(MaxDate, 4)
VAR Year2 = MID(MaxDate, 6, 4)
VAR Period = MID(MaxDate, 12, 2)
RETURN
Year1 & "-" & Year2 & " P" & Period
CurrentPeriod =
VAR CurrentDate = TODAY()
RETURN
MAXX(
FILTER(
'Hold Date',
'Hold Date'[PERIOD_START_DT] <= CurrentDate && 'Hold Date'[PERIOD_END_DT] >= CurrentDate
),
'Hold Date'[Release Period]
)

I want to create a flag to mark Current year Current Period as 1 till Last Year Current period.
the out put should be like this