$Levels=5; // set the number of levels up and down of 8am candle
$8am=SubString(GetBar(-1).Time,0,4)+"/"+ SubString(GetBar(-1).Time,4,6) +"/"+ SubString(GetBar(-1).Time,6,8) +" 08:00:00";

$Bar=GetBar($8am);
$8amHi=$Bar.HI;
$8amLo=$Bar.LO;
$8amHiLo=$8amHi-$8amLo;
$LevelsDeleted=0;

$LevelsCounter=0;
while($LevelsCounter!=$Levels){
	$T=GetTrendLine("Avi_" + SYMBOL +$LevelsCounter+"up");
	if(ISOBJ($T)!=0) {
		$T.delete();
		$LevelsDeleted=1;
	}

	$T=GetTrendLine("Avi_" + SYMBOL +$LevelsCounter+"down");
	if(ISOBJ($T)!=0) {
		$T.delete();
		$LevelsDeleted=1;
	}
	$LevelsCounter=$LevelsCounter+1;
};

if($LevelsDeleted==1) return;

$LevelsCounter=0;

while($LevelsCounter!=$Levels){

	$T=CreateTrendline("horizline");
	$T.name="Avi_" + SYMBOL +$LevelsCounter+"up";
	$T.price=$8amHi+$8amHiLo*$LevelsCounter;
	$T.Visible=1;
	$T.lineWidth=2;
	$T.color="128,0,64";
	$T.labelbgcolor="255,255,255";
	$T.save();

	$T=CreateTrendline("horizline");
	$T.name="Avi_" + SYMBOL +$LevelsCounter+"down";
	$T.price=$8amLo-$8amHiLo*$LevelsCounter;
	$T.Visible=1;
	$T.lineWidth=2;
	$T.color="128,0,64";
	$T.labelbgcolor="255,255,255";
	$T.save();

	$LevelsCounter=$LevelsCounter+1;
};