Why does this AddChartBubble add a bubble to all the bars?

[oldyoungguy]

def isLastBar = !IsNaN(close) and IsNaN(close[-1]);
def lastBarNum = if isLastBar then BarNumber() else 0;

AddChartBubble( "time condition"=lastBarNum, "price location"=high, text="BarNumber" + BarNumber(), color=Color.YELLOW);
AddChartBubble( "time condition"=(lastBarNum - 1), "price location"=high, text="BarNumber" + BarNumber(), color=Color.YELLOW);

The first AddChartBubble adds a bubble at the last bar.

But the second AddChartBubble adds a bubble to ALL the bars. Why?

How can I add a bubble to the 5th bar from the rightmost/last bar?

 

[SleepyZ]

def isLastBar = !IsNaN(close) and IsNaN(close[-1]);
def lastBarNum = if isLastBar then BarNumber() else 0;

AddChartBubble( "time condition"=lastBarNum, "price location"=high, text="BarNumber" + BarNumber(), color=Color.YELLOW);
AddChartBubble( "time condition"=(lastBarNum - 1), "price location"=high, text="BarNumber" + BarNumber(), color=Color.YELLOW);

The first AddChartBubble adds a bubble at the last bar.

But the second AddChartBubble adds a bubble to ALL the bars. Why?

How can I add a bubble to the 5th bar from the rightmost/last bar?

The time condition needed a boolean result (yes/no, 1/0) to plot the bubble.

Using the upper image (code requested) and the lower test code to see the results of the various parts of the code at each bar :

Your 1st bubble, used the boolean (islastbar) as part of Lastbarnum to place the bubble on the chart and identify the last barnumber as 850

Your 2nd bubble now uses barnumber()== highestall(lastbarnum-5) to create the boolean (1) to place the bubble at 845. The highestall(lastbarnum-5) made 845 available to all bars on the chart allowing the barnumber()== highestall(lastbarnum-5) to be a boolean (1) at barnumber 845

The circled parts of the lower images test code show where the booleans (1) occurred and the bubble appeared

Code Requested

def isLastBar = !IsNaN(close) and IsNaN(close[-1]);
def lastBarNum = if isLastBar then BarNumber() else 0;

AddChartBubble( "time condition" = lastBarNum, "price location" = high, text = "BarNumber" + BarNumber(), color = Color.YELLOW);
AddChartBubble( BarNumber() == HighestAll(lastBarNum - 5), "price location" = high, text = "BarNumber" + BarNumber(), color = Color.YELLOW);

Test Code

def isLastBar = !IsNaN(close) and IsNaN(close[-1]);
def lastBarNum = if isLastBar then BarNumber() else 0;

AddChartBubble( "time condition" = lastBarNum, "price location" = high, text = "BarNumber" + BarNumber(), color = Color.YELLOW);
AddChartBubble( BarNumber() == HighestAll(lastBarNum - 5), "price location" = high, text = "BarNumber" + BarNumber(), color = Color.YELLOW);

input test = yes;
AddChartBubble( test and islastBar, "price location" = high, text = "BarNumber" + BarNumber(), color = Color.white);
AddChartBubble(test, low,
isLastBar + "\n" +
lastBarNum + "\n" +
(lastBarNum - 5) + "\n" +
HighestAll(lastBarNum - 5) + "\n" +
(BarNumber() == HighestAll(lastBarNum - 5)), Color.WHITE, no);

 

[halcyonguy]

def isLastBar = !IsNaN(close) and IsNaN(close[-1]);
def lastBarNum = if isLastBar then BarNumber() else 0;

AddChartBubble( "time condition"=lastBarNum, "price location"=high, text="BarNumber" + BarNumber(), color=Color.YELLOW);
AddChartBubble( "time condition"=(lastBarNum - 1), "price location"=high, text="BarNumber" + BarNumber(), color=Color.YELLOW);

The first AddChartBubble adds a bubble at the last bar.

But the second AddChartBubble adds a bubble to ALL the bars. Why?

How can I add a bubble to the 5th bar from the rightmost/last bar?

codes run on every bar.
if there are 50 bars on the chart , as the program progresses through each bar, 1 to 50 , every bar will be the last bar up till that point, and this will be true on every bar.
def isLastBar = !IsNaN(close) and IsNaN(close[-1]);

sleepyz used highestall() to really find the last bar