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Unfortunately, it's likely due to the operating system or hardware you're using – since they don't meet the system requirements for Lens Studio.
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First add the behavior script to your project.
Then set the trigger to "Back Camera", Options -> Allow to "Always", Response Type "Set Enabled".

For the target find "SunglassesAnchor" and for the action use "Disable"
Like this:
Behavior script should be at the bottom of the objects list.
That should do it.
Hello Brandon I tried what you said it is working but its having a problem its just working on the front camera for once after i switch to rear camera then back again to the front camera it doesnt work i have to start the lens again please help
This is the video proof :- https://drive.google.com/file/d/1ye_eJwnSzhLI_6NNGs7l7_ihBSID4R4j/view?usp=sharing
Hi ujjshah,
You can change the project settings so the lens only works on the Front camera.
https://lensstudio.snapchat.com/guides/submission/configuring-project-info/
EDIT: you can read more about this here:
https://support.lensstudio.snapchat.com/hc/en-us/articles/360031161132-How-can-I-ensure-that-the-Lens-starts-in-World-mode-rear-camera-
Let me know if there's anthing else i can help you with,
Have a nice day/night :)