Reload webview or window when gps coords found

Hello everybody,

I have a window with a webview that gets the longtitute and latitude, everything works fine, but in the very first run of my application, when my application has no longitute and latitude i send a url with null values for longtitute and latitude in my createWebView url request.

In order for me to send this values i need the user ether to reload with click on the tab of the current window or the user must close the application and reopen it, so my webview url can be sent with the longtitude and latitude values,

I need to reload or refresh or even to trigger a tab click of the window when the longtitude and latitude has values. Can someone give me some help on this?

here is my application code

function ApplicationWindow(title) {
 
    var winHome = Ti.UI.createWindow({
        title: L('Home'),
        navBarHidden:true,
        fullscreen: true,
        backgroundColor: 'white',
    });
 
    Ti.App.GeoApp = {};
 
    Ti.Geolocation.preferredProvider = Titanium.Geolocation.PROVIDER_GPS;
    Titanium.Geolocation.accuracy = Titanium.Geolocation.ACCURACY_BEST;
    Titanium.Geolocation.distanceFilter = 10;
 
    if( Titanium.Geolocation.locationServicesEnabled === false ) {
 
            Ti.API.debug('Your device has GPS turned off. Please turn it on.');
    }
 
    function updatePosition(e) {
 
    if( ! e.success || e.error ) {
       // alert("Unable to get your location, enable GPS location access.");
        Ti.API.debug(JSON.stringify(e));
        Ti.API.debug(e);
        return;
    }
 
    Ti.App.fireEvent("app:got.location", {
        "coords" : e.coords       
    });
};
 
    Ti.App.addEventListener("app:got.location", function(d) {
    Ti.App.GeoApp.f_lng = d.coords.longitude;
    Ti.App.GeoApp.f_lat = d.coords.latitude;
    Ti.API.debug(JSON.stringify(d));
 
    var lat= d.coords.latitude;
    var lng= d.coords.longitude;
    Ti.App.Properties.setString('lat',lat);
    Ti.App.Properties.setString('lng',lng);
 
    Titanium.Geolocation.removeEventListener('location', updatePosition);
    });
 
    Titanium.Geolocation.getCurrentPosition( updatePosition );
    Titanium.Geolocation.addEventListener( 'location', updatePosition );
 
    var webViewHome = Ti.UI.createWebView({
        enableZoomControls:false,
        height:Ti.UI.SIZE,
        width:Ti.UI.SIZE,
        url: "http://www.mypage.com/?lat="+Ti.App.Properties.getString('lat')
        +"&lng="+Ti.App.Properties.getString('lng')
    }); 
 
 
    winHome.add(webViewHome);
    winHome.orientationModes=[Titanium.UI.PORTRAIT];
    return winHome;
};
 
module.exports = ApplicationWindow;