how to register access to the properties of the effect ID Matte through AE scripting?

Good afternoon...

Trying to record the settings for the effect ID Matte. How to switch property Aux.Cannel via AE Scripting

For example, I want to switch to ID Material mode....

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var MyComp = app.project.activeItem;

var MyLayer = MyComp.layer(1)

myEffect = MyLayer.property("Effects").addProperty("ID Matte") ("Aux.Cannel").setValue(0);

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this code generates an error

Are there knowledgeable people ????