weird something

index = timeframe.period == "1" ? 1440  :
   timeframe.period == "3" ? 480 : timeframe.period == "5" ? 288 :
   timeframe.period == "15" ? 96 : timeframe.period == "30" ? 48 :
   timeframe.period == "45" ? 32 : timeframe.period == "60" ? 24 :
   timeframe.period == "120" ? 12 : timeframe.period == "180" ? 8 :
   timeframe.period == "240" ? 6 : timeframe.period == "D" ? 1 : 0


var Func1_StartTime = timestamp("GMT+1",2020,1,21,0,0,0)
var Func1_EndTime = Func1_StartTime + 86400000

hugh = highest(high, index)
high_ = high
high_ := cross(time,Func1_EndTime) ? hugh : high_[1]


luw = lowest(low, index)
low_ = low
low_ := cross(time,Func1_EndTime) ? luw : low_[1]

timeluw = valuewhen(low==luw,time,0)
timelow_ = time
timelow_ := cross(time,Func1_EndTime) ? timeluw : timelow_[1]

timehugh = valuewhen(high==hugh,time,0)
timehigh_ = time
timehigh_ := cross(time,Func1_EndTime) ? timehugh : timehigh_