spatial reference

[SamerToukan]

Hello, I'm trying to plot a single point using Latitude/Longitude with the following ActionScript:

var myGraphicMarker:Graphic = new Graphic(new MapPoint(-129.000, 50.1000, new SpatialReference(102754)));
   myGraphicMarker.toolTip = "Marker";
   myGraphicsLayer.add(myGraphicMarker);

When I run this, it plots it out to the center of the map. What is the spatial reference for latitude/longitude?

cheers,

[KenBuja]

Take a look at here for the geographic coordinate system codes and here for the projected coordinate system codes