/*
        This example demonstrates how to set a value for ActionDeltaItem of type 
        siModificationTypeConstraints
*/
NewScene(null, false);
// Create a reference model from a cube
var oRoot = Application.ActiveProject.ActiveScene.Root;
var oCube = oRoot.AddGeometry("Cube", "MeshSurface");
var emdlFileRefModel = XSIUtils.BuildPath(Application.InstallationPath(siProjectPath), "Models", "MyModel.emdl"); 
CreateModelAndConvertToRef(oCube, emdlFileRefModel );
// Create a cone
var oCone = oRoot.AddGeometry("Cone", "MeshSurface");
// Create a sphere
var oSphere = oRoot.AddGeometry("Sphere", "MeshSurface");
// Translate the 
Translate(oCone, 3.0, 3.0, 0.0, siRelative, siView, siObj, siXYZ, null, null, null, null, null, null, null, null, null, 0, null);
Translate(oSphere, -2.0, -2.0, 0.0, siRelative, siView, siObj, siXYZ, null, null, null, null, null, null, null, null, null, 0, null);
ApplyCns("Position", oCube, oCone, null);
// Get the Delta object
var oDelta = Dictionary.GetObject("Model.Delta");
// Get the collection of the first ActionDelta
var oActionDeltaItemsColl = oDelta.ActionDeltas(0).Items;
for (var i=0; i<oActionDeltaItemsColl.Count; i++) {  
         // Replace the cone as constraining object by the Sphere
         oActionDeltaItemsColl(i).Value = "Scene_Root." + oSphere.Fullname;
}
// Apply modification on the target reference asset container (the reference model)
oDelta.Apply()
// Reload the reference model to reset cube.kine.local.posx value
UpdateReferencedModel("Model");

/*
        This example demonstrates how get and set value for ActionDeltaItem of type siModificationDeltaFCurves
*/
NewScene(null, false);
// Create a reference model from a cube
var oRoot = Application.ActiveProject.ActiveScene.Root;
var oCube = oRoot.AddGeometry("Cube", "MeshSurface");
var emdlFileRefModel = XSIUtils.BuildPath(Application.InstallationPath(siProjectPath), "Models", "MyModel.emdl"); 
CreateModelAndConvertToRef(oCube, emdlFileRefModel );
// Create an FCurve on the model local kine
SaveKey("Model.kine.local.posx,Model.kine.local.posy,Model.kine.local.posz", 1, null, null, null);
// Get the Delta object
var oDelta = Dictionary.GetObject("Model.Delta");
// Get the Fcurve in the ActionDeltaItem of type siModificationDeltaFCurves
var oFCurve = oDelta.ActionDeltas(0).Items(0).value;
// Define the number of keys
var nbkeys = 100;
// Start editing the fcurve
oFCurve.BeginEdit();
// Add keys to the fcurve
for (var i=0; i<nbkeys; i++) {
        val = (Math.sin( 1/(i+1) ) * 10);
        oFCurve.AddKey( i, val );
}
// End editing the fcurve and put the undo event onto 
// the undo/redo stack
oFCurve.EndEdit();
// Set the Fcurve in the ActionDeltaItem of type siModificationDeltaFCurves
oDelta.ActionDeltas(0).Items(0).value = oFCurve;
// Apply the change
oDelta.Apply();