Can I extrude width of polygon?

Is there a way that I can extrude width of polygon on cesium? I am trying not to touch the footprint, as I am directly reading from a database.

entity.polygon.extrudedHeight=10; //here 10 is height you can add the height you wish here. Dont know about extruding width only but this will extrude the whole polygon to the given height.
Here is the sandcastle link