H_period=input.int(9)
L_period=input.int(9)

GHLA(HPeriod, LPeriod) =>
var int State = 0
var float result = 0
MaH = ta.sma(high,HPeriod)
MaL = ta.sma(low,LPeriod)
if close > MaH[1]
State := 1
else
if close < MaL[1]
State := -1
else
State := State[1] // return the previous state
result := switch
close
MaL[0]
close > MaH[1] =>
MaH[0]
=>
result[1]
[result, State]

Just in case someone need it.

Learn programming! Then do any test you want. Unlike C++, C is a simple language that anyone can learn in a couple days.

thanks