Look, even if i add an other condition to check if the first array have been updated, it leads to the same error even if i check if the index of the first array is filled with “isset” instruction… That means that the array is temporarly updated then deleted to come back to previous situation according to the real close at the end of the bar!
=> Thus the only way to prevent this bug if to send the variable index into an other variable (temp) which then will occurs only at the end of the bar, preventing the code to reach an index of the first array that have not been permanently filled yet.

Once RSILen = 14
Once prd = 1
Once pBcTi = -1
Once pBmTi = -1

src = RSI[RSILen](close)

If src[prd] = lowest[2*prd+1](src) then
pBcTi=pBcTi+1
$pBcT[pBcTi]= Barindex-1

if pBcTi > 2 and isset($pBcT[pBcTi]) then
if src[barindex-$pBcT[pBcTi-1]] <= src[barindex-$pBcT[pBcTi-2]] and src[barindex-$pBcT[pBcTi-1]] <= src[barindex-$pBcT[pBcTi]] then
pBmTi=pBmTi+1
$pBmT[pBmTi]= $pBcT[pBcTi-1]
drawpoint($pBcT[pBcTi-1],src[barindex-$pBcT[pBcTi-1]],3) coloured("red",100)
endif
endif
endif

Return src

But things get even stranger here below…

Once RSILen = 14
Once prd = 1
Once pBcTi = -1
Once pBmTi = -1

src = RSI[RSILen](close)

If src[prd] = lowest[2*prd+1](src) then
pBcTi=pBcTi+1
$pBcT[pBcTi]= Barindex-1
temp = pBcTi
if temp > 2 then
if src[barindex-$pBcT[pBcTi-1]] <= src[barindex-$pBcT[pBcTi-2]] and src[barindex-$pBcT[pBcTi-1]] <= src[barindex-$pBcT[pBcTi]] then
pBmTi=pBmTi+1
$pBmT[pBmTi]= $pBcT[pBcTi-1]
drawpoint($pBcT[pBcTi-1],src[barindex-$pBcT[pBcTi-1]],3) coloured("red",100)
endif
endif
endif

Return src

Can you explain that ? 🙂