using of "var"

Hi, I can't understand why e and maxmacd have different values. They should be equal.
Can someone help me?:(
study(My Script)
a = input(26, title=slow average)
b = input(12, title=fast average)
c = input(9, title=Macd average)
slow_average=ema(close,a)
fast_average=ema(close,b)
Macd=fast_average-slow_average
aMacd=ema(Macd,c)

var float maxmacd=0

if crossunder(Macd,aMacd)
maxmacd:=highest(high,5)
e=valuewhen(crossunder(Macd,aMacd),highest(high,5),0)

plot(maxmacd)

plot(e)

Hi

Not sure about my answer

This is because the highest in the if crossunder statement is executed at the crossunder only, whereas the highest in the valuewhen is executed at every candle.

I know the valuewhen is built so that it's executed at the crossunder too but still ... I believe the discrepancy comes from the number of times this highest function is executed

I would take this highest(high, 5) out of the IF condition so that it's executed at every candle

//@version=4
study("My Script")
a = input(26, title="slow average")
b = input(12, title="fast average")
c = input(9, title="Macd average")
slow_average=ema(close,a)
fast_average=ema(close,b)
Macd=fast_average-slow_average
aMacd=ema(Macd,c)

var float maxmacd=0


my_high = highest(high,5)

if crossunder(Macd,aMacd)
    maxmacd:=my_high

e=valuewhen(crossunder(Macd,aMacd),my_high, 0)

plot(maxmacd)

plot(e)

Dave (@dave):
Hi
Not sure about my answer
This is because the highest in the if crossunder statement is executed at the crossunder only, whereas the highest in the valuewhen is executed at every candle.
I know the valuewhen is built so that it's executed at the crossunder too but still ... I believe the discrepancy comes from the number of times this highest function is executed
I would take this highest(high, 5) out of the IF condition so that it's executed at every candle

Now I can understand, thanks a lot!!! :)