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    <p>You can just inject the MarkerLocationer into AddProjectToDB and retrieve the value from there. There is no need to use hidden fields. Like this:</p> <p><strong>MarkerLocationer.java (Updated)</strong></p> <pre><code>@ManagedBean @SessionScoped public class MarkerLocationer implements Serializable { private static final long serialVersionUID = 4288587129736579882L; private MapModel draggableModel; public MarkerLocationer(){ draggableModel = new DefaultMapModel(); //Shared coordinates LatLng coord1 = new LatLng(41.017599, 28.985704); //Draggable draggableModel.addOverlay(new Marker(coord1, "Projenin olduğu yere sürükleyin.")); for (Marker marker : draggableModel.getMarkers()) { marker.setDraggable(true); } } public MapModel getDraggableModel() { return draggableModel; } public void setDraggableModel(MapModel draggableModel) { this.draggableModel = draggableModel; } public void onMarkerDrag(MarkerDragEvent event) { // since marker's state is already kept in draggableModel you do not necessarily } public LatLng getMarkerPosition(){ return draggableModel.getMarkers().get(0).getLatlng(); } } </code></pre> <p><strong>AddProjectToDB.java (Updated)</strong></p> <pre><code>@ManagedBean @ViewScoped public class AddProjectToDB { @ManagedProperty(value = "#{markerLocationer}") private MarkerLocationer markerLocationer; public void setMarkerLocationer(MarkerLocationer markerLocationer) { this.markerLocationer = markerLocationer; } public void save() { double lat = markerLocationer.getMarkerPosition().getLat(); double lon = markerLocationer.getMarkerPosition().getLng(); //.. your stuff } } </code></pre> <p><strong>And the JSF page</strong></p> <pre><code>&lt;h:form&gt; &lt;p:growl id="growl" showDetail="true" /&gt; &lt;script src="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript"&gt;&lt;/script&gt; &lt;p:gmap center="41.017599,28.985704" zoom="13" type="HYBRID" model="#{markerLocationer.draggableModel}" style="width:600px;height:400px"&gt; &lt;p:ajax event="markerDrag" listener="#{markerLocationer.onMarkerDrag}" update="growl" /&gt; &lt;/p:gmap&gt; &lt;p:commandButton value="Projeyi Kaydet" icon="ui-icon-disk" action="#{addProjectToDB.save}"/&gt; &lt;/h:form&gt; </code></pre>
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    1. COIt doesn't seem to work. It gives me nullPointerException.
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      1. USAli Yucel Akgul
    2. COsee my upate, it works now. the ManagedProperty wasn't a valid value expression.
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