Dynamically Adding Layers to a Map with Selectable Features

[Scott Reisdorf]

I am dynamically adding layers to my Map object, and would like the Map 
to have the Features selected after the layer is loaded.
I have followed the DevGuide examples, and I get the new layers to 
appear; however, the features on the layer are not selectable.  Looking 
into the base Map definition, I see that when a layer is added that can 
be selected, additional XML nodes are added to the map as below, with 
the 'Selectable == true'.  
    <MapLayer>
      <Name>New Layer</Name>
      <ResourceId>Library://.... </ResourceId>
      *<Selectable>true</Selectable>*
      <ShowInLegend>true</ShowInLegend>
      <LegendLabel>   </LegendLabel>
      <ExpandInLegend>true</ExpandInLegend>
      <Visible>true</Visible>
      <Group></Group>
    </MapLayer>

If I want my dynamic layers to be selectable, do I need to also update 
the base Map Definition file too, or is there some other way via the API 
that I can do this and have the new layer features be selectable.

Thanks,

-scott
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