Want to try the Range measurment for stereo camera

1.Which seller did you purchase the product(s) from?
Other Arducam Distributor (Tokopedia)
2.The Model number of the product(s) you have purchased?
IMX219 8MP For Raspberry Pi
3.Which Platform are you using the product(s) on?
Raspberry Pi 4B
4.Which instruction are you following?
5.Has your product ever worked properly?
work intermittently
6.What problems are you experiencing?
Excuse me i want to take the range measurment just like on this video https://www.youtube.com/watch?v=xjx4mbZXaNc but the data range won’t come out, and i did a little bit research about this line for range measurment but still won’t come out, so what should i do for the program ? thank you
7.What attempts at troubleshooting have you already made?
ask a friend
8.How would you like us to help you?
show the solutions step by step

The instruction are you following is not arducam instruction.

Please attach me your hardware connection and I will help you check it in detail.