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Using this tutorial ( to integrate GoogleMaps to my application, I have a question about it.

I set the annotation with:
MapDemoAnnotation* annotation = [[MapDemoAnnotation alloc] initWithCoordinate:newCoord];
[mapView addAnnotation:annotation];
[annotation release];
So I initialize with coordinates. But in my case, the coordinates (not only mine!) will change. How could I set the new coordinates and they will be updated on the map?!

Does anyone know?

Thanks al lot and bets regards.
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