Is there a problem using ARFace with Android and ARCore, because some properties appear to be null always?

I am working on an Android app that uses eye tracking with Unity. I am using ARFoundation and ARCore. The problem is that when i track a face, and i have the component ARFace, the ARFace.leftEye, ARFace.rightEye and ARFace.fixationPoint are null. I dont know if this is because ARCore does not support this properties of the ARFace and only IOS does because i saw an IOS project that could do this with the ARKit. If anyone knows if its an Android problem or these properties are null for any other reason i would apreciate support.

I've tried to track a face and then track the eyes of the face. I've been able to track the face with ARFaceManager and ARFace but when i try to take the leftEye and rightEye of the ARFace it appears to be null. This shouldn´t happen. Also the fixationPoint is null but the face is tracked correctly and other properties such as the vertices of the ARFace are not null so i guess there has to be some kind of problem with ARCore and Android.

ARCore does not support eye tracking, only ARKit. Similarly, ARCore does not support blend shapes for the face like ARKit. All you get with ARCore at this time is a face mesh and tracking of three face regions, the nose tip, and the left and right forehead. See the ARCore documentation at https://docs.unity3d.com/Packages/com.unity.xr.arcore@3.0/api/UnityEngine.XR.ARCore.html.