public class CIMPointCloudLayer : CIMBaseLayer, System.ComponentModel.INotifyPropertyChanged, System.Xml.Serialization.IXmlSerializable  

{
  // Note: call within QueuedTask.Run()
  {
    var def = pointCloudSceneLayer.GetDefinition() as CIMPointCloudLayer;
    //Get the ColorModulation off the renderer
    var modulation = def.Renderer.ColorModulation;
    if (modulation == null)
      modulation = new CIMColorModulationInfo();
    //Set the minimum and maximum intensity as needed
    modulation.MinValue = 0;
    modulation.MaxValue = 100.0;
    //apply back
    def.Renderer.ColorModulation = modulation;
    //Commit changes back to the CIM
    pointCloudSceneLayer.SetDefinition(def);
  }
}