how to use facesdk_eyelandmark3d API ?

[CheckerBoards]

Hi.
Follow your demo, I guess it should read the detect model at first, so
facesdk_readModelFromFile(ModelType::Detect, "../models/detect.bin", ImageFormat::RGB);
sdkFaces faces = facesdk_detect(data);

and then, I try to read the iris_landmark.bin model,
facesdk_readModelFromFile(ModelType::Iris, "../models/iris_landmark.bin", ImageFormat::RGB);
sdkFaces3d faces1 = facesdk_eyelandmark3d();

However, the faces1.face3d_count always equals to 0.
Anything wrong in my steps?

[Crusoekid]

you need init first. then use Detect && Landmark3d && Iris

[CheckerBoards]

Thanks for your reply, it works now.