MARS Image Track m_Subscriber Empty In IOS

Unity Engine
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1

I tried to add some custom event when Image tracking in different conditions , so I make some change in MARSession.
I turn m_Subscriber from readonly to public , so I can get it , then , I access m_Subscriber to my script :

 MARS_instance.m_Subscriber.SubscribeMarkerUpdated (customMarkerUpdateEvent);

It work fine in editor , but not work in iOS.
When I trigger this line , it show this on Xcode

**Uploading Crash Report**
**NullReferenceException: Object reference not set to an instance of an object.**

And I find out , m_Subscriber is null when I run in iOS , but it exist in the editor .

Is there anyway to find it? Many thx!

2

Hi there! Would you be able to share your project so we can look at your code? If so, please use the Unity Bug Reporter (Help > Report a bug…) to zip up the project and send it our way. A Google Drive link also works :slight_smile:

As for your issue, I’ll need to know a little more about how your script is set up. What sets up m_Subscriber in the Editor? Do you have any provider selection options set that would prevent it from being set up in Player Builds?