How to clear a graphic result on map in FlexViewer

[francescodi_vito]

hi guys,
i developed a model with arcgis 10 and i pulished it with arcgis server.
Now in Flex Viewer i created a new widget and i wrote a flex script for call this model whit a graphic result on a map. When i run the model i receive a graphic result that i wrote in my script, but the clear function don't work.
i a custom web app. i create a samp'èle button with
click="graphicsLayer.clear()"
but this method in Flex Viewer don't works. Why?
could someone tell me how to rewrite this method to get it to work in FlexViewer?
Thanks
any help is good

[IvanBespalov]

May be this code helps:

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                    xmlns:s="library://ns.adobe.com/flex/spark"
                    xmlns:mx="library://ns.adobe.com/flex/mx"
                    xmlns:esri="http://www.esri.com/2008/ags">
 
    <s:layout>
        <s:VerticalLayout paddingBottom="6"/>
    </s:layout>
 
    <fx:Script>
        <![CDATA[
            import com.esri.ags.Graphic;
            import com.esri.ags.events.MapMouseEvent;
            import com.esri.ags.geometry.Geometry;
            import com.esri.ags.geometry.MapPoint;
   
            import mx.collections.ArrayCollection;
            import mx.utils.StringUtil;
   
            private var lastAddedGraphic:Graphic = null;
   
            /**
             * Listen map mouse down handler
             */
            protected function myMap_mapMouseDownHandler(event:MapMouseEvent):void
            {
                var grGeometry:MapPoint = event.mapPoint;
                var grAttributes:Object = new Object();
                grAttributes.creationDate = new Date().toString();
    
                var gr:Graphic = new Graphic(grGeometry, sms, grAttributes);
                gr.toolTip = gr.attributes.creationDate;
    
                var grId:String = myGraphicsLayer.add(gr);
    
                trace(StringUtil.substitute("Graphic with id: {0} added.", grId));
    
                lastAddedGraphic = gr;
            }
   
            /**
             * Listen clear all button click handler
             */
            protected function btnClearClick(event:MouseEvent):void
            {
                myGraphicsLayer.clear();
                lastAddedGraphic = null;
            }
   
            /**
             * Listen remove button click handler
             */
            protected function btnRemoveClick(event:MouseEvent):void
            {
                if (lastAddedGraphic != null)
                {
                    try
                    {
                        var grId:String = lastAddedGraphic.id;
                        myGraphicsLayer.remove(lastAddedGraphic);
                        trace(StringUtil.substitute("Graphic with id: {0} removed.", grId));
                        lastAddedGraphic = null;
                    }
                    catch (err:Error)
                    {
                        trace(err.message);
                    }     
                }
            }
   
        ]]>
    </fx:Script>
 
    <fx:Declarations>
        <!-- Symbol for all point shapes -->
        <esri:SimpleMarkerSymbol id="sms"
                                           color="0x00FF00"
                                           size="12"
                                           style="{SimpleMarkerSymbol.STYLE_DIAMOND}"/>
 </fx:Declarations>
 
 <esri:Map id="myMap"
     mapMouseDown="myMap_mapMouseDownHandler(event)"
     level="3"
     wrapAround180="true">
  <esri:ArcGISTiledMapServiceLayer url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"/>
  <esri:GraphicsLayer id="myGraphicsLayer"/>
 </esri:Map>
 
 <s:Button id="btnClearAll" label="Clear all graphics" click="btnClearClick(event)"/>
 <s:Button id="btnRemove" label="Remove last graphics" click="btnRemoveClick(event)"/>
</s:Application>