Heart rate sensor in Gear 3 samsung

I use sample https://resources.developer.samsung.com/050_Samsung_Webinars/Heart_Rate_Monitor_Sample_App_Guide

in Samsung site and download from example. my issues are, this sample work in simulator but in real device Gear 3 Samsung sensor not work and return zero.

id add this code, but not work

If you have Tizen 4.0 it might be connected with privacy policy. Please try use requestPermission method. You might check permission by checkPermission method. It it return PPM_DENY then modify onhrmControlBtnClick method in your code to

/* Defines the error callback. */
function errorCallback(error)
{
    console.log("The following error occurred: " + error.name);
}

/* Defines PermissionSuccessCallback. */
function permissionSuccess(result, privilege)
{
    console.log("User's action for privilege " + privilege + " was to: " + result);
}

function onhrmControlBtnClick() {
    console.log("onhrmControlBtnClick() called...");

    tizen.ppm.requestPermission("http://tizen.org/privilege/healthinfo", permissionSuccess, errorCallback);

    if (hrmControlBtn.innerHTML === TEXT_START){
        console.log("info on button = start");
        startSensor();
    } else {
        console.log("info on button = stop");
        stopSensor();
    }
}

I tested on my device and after I accept this privilege, application start working properly.