## ClipEffectItem.Expression

### Description

Returns the String representation of the expression used by the ClipEffectItem. The valid tokens that can be used in the context of this expression can be found in the "Animating" user's guide.

### C# Syntax

    // get accessor
    String rtn = ClipEffectItem.Expression;

### Examples

#### Python Example

    oRoot = Application.ActiveSceneRoot
    oCube = oRoot.AddGeometry("Cube", "MeshSurface")
    #Creating the first animation source
    oSource = Application.StoreAction(oRoot, "cube.kine.local.posx,cube.kine.local.posy,cube.kine.local.posz", 1, "StoredStaticPose", 1, 1, 5, 0, 0)
    #Creating the first clip
    oClip = Application.AddClip(oRoot, oSource)
    for i in range(oClip.MappedItems.Count):
            oCurrMappedItem = oClip.MappedItems(i)
            oParam = oCurrMappedItem.Destination
            if oParam.FullName == "cube.kine.local.posy":
                    Application.SetMappingRule(oClip.FullName + ".ActionClip",oParam,"frame",i+1)
                    break
    Application.LogMessage("The expression associated with the posy item is " +oCurrMappedItem.ClipEffectItem.Expression)