Интеграция скрипта в оповещения pine

есть скрипт PINE от tradingview

нужно допилить что бы я мог выставлять оповещения (по активации up и dn)

//@version=2
strategy(title = "PriceChannel for D1 v1.0", shorttitle = "PriceChannel D1", overlay = true, default_qty_type = strategy.percent_of_equity, default_qty_value = 100.0, pyramiding = 0)

//Settings
needlong = input(true, "long")
needshort = input(true, "short")
slowlen = input(30, defval = 30, minval = 2, maxval = 200, title = "PriceChannel Period")
pcbars = input(1, defval = 1, minval = 1, maxval = 20, title = "PriceChannel Bars")
usecol = input(true, "Use color-filter")
usebod = input(true, "Use body-filter")
needbg = input(false, defval = false, title = "Need trend Background?")
fromyear = input(1900, defval = 1900, minval = 1900, maxval = 2100, title = "From Year")
toyear = input(2100, defval = 2100, minval = 1900, maxval = 2100, title = "To Year")
frommonth = input(01, defval = 01, minval = 01, maxval = 12, title = "From Month")
tomonth = input(12, defval = 12, minval = 01, maxval = 12, title = "To Month")
fromday = input(01, defval = 01, minval = 01, maxval = 31, title = "From day")
today = input(31, defval = 31, minval = 01, maxval = 31, title = "To day")

src = close

//PriceChannel
lasthigh = highest(src, slowlen)
lastlow = lowest(src, slowlen)
center = (lasthigh + lastlow) / 2

//Trend
ub = low > center ? 1 : 0
db = high < center ? 1 : 0
trend = sma(ub, pcbars) == 1 ? 1 : sma(db, pcbars) == 1 ? -1 : trend[1]

//Body
body = abs(close - open)
abody = sma(body, 10)

//Signals
up = trend == 1 and (close < open or usecol == false) and (body > abody / 5 or usebod == false)
dn = trend == -1 and (close > open or usecol == false) and (body > abody / 5 or usebod == false)

//alert (не работает(
alertcondition(up, title='LG', message='в Лонг')
alertcondition(dn, title='SH', message='В шорт')

//Lines
plot(center, color = blue, linewidth = 3, transp = 0, title = "PriceChannel Center")

//Background
col = needbg == false ? na : trend == 1 ? lime : red
bgcolor(col, transp = 80)

//Trading
if up
    strategy.entry("Long", strategy.long, needlong == false ? 0 : na, when=(time > timestamp(fromyear, frommonth, fromday, 00, 00) and time < timestamp(toyear, tomonth, today, 23, 59)))

if dn
    strategy.entry("Short", strategy.short, needshort == false ? 0 : na, when=(time > timestamp(fromyear, frommonth, fromday, 00, 00) and time < timestamp(toyear, tomonth, today, 23, 59)))
    
if time > timestamp(toyear, tomonth, today, 23, 59)
    strategy.close_all()