Error when loading TRTModel in FaceDetection

I downloaded the SDK and when trying to run the executable samples I receive the following message 'Cannot load model “face_detection_86.engine” '. When looking the files located at C:\Program Files\NVIDIA Corporation\NVIDIA AR SDK\models i could only locate a file named “face_detection_89.engine.trtpkg”. Is there a way to change the model being loaded by this program in order to make it work properly?