This ProBuilder code snippet demonstrates how to count the number of bars on a chart that occur within a specified time range and display this count on the chart. The example focuses on counting bars between 09:00:00 and 23:00:00.

There you go:
Once Tally = 0
If OpenTime = 090000 Then Tally = 0
Endif
If (OpenTime >= 090000) And (OpenTime <= 230000) Then
    Tally = Tally + 1
    drawtext("#Tally#",barindex,low - range)
Endif
return

Explanation of the Code:

• Initialization: The Once keyword is used to set the variable Tally to 0 when the script is first executed. This ensures that the count starts from zero each time the chart or indicator is loaded.
• Reset Condition: The script checks if the OpenTime of the bar is exactly 09:00:00. If true, it resets Tally to 0. This line seems redundant given the initial setup and could be intended for specific scenarios not detailed here.
• Counting within Time Range: The main conditional statement checks if the OpenTime of the bar is between 09:00:00 and 23:00:00, inclusive. If the condition is met, it increments the Tally by 1.
• Displaying the Count: The drawtext function is used to display the current value of Tally on the chart. It positions the text at the barindex (current bar's index) and just below the lowest price of the bar by subtracting the range (difference between high and low prices of the bar).

This snippet is useful for traders or analysts who want to track the number of bars during specific trading hours or any other activities that are time-bound on their charts.