extrudeEdges in a simpleObject

Hi.  I'm very new to MAXScripting.  I’m experimenting with my first geometric simpleObject plugin.  For one of the steps (or two, technically) I’d like to Extrude an array of edges in the same fashion as the ExtrudeEdge tool of an EPoly; in other words, set both the extrusion height and the base width, either by dragging the mouse or by entering all the parameters in a rollout and then clicking a “Create” button.  I can’t seem to find an Extrude method - mesh, meshop or polyOp - in the Reference that would do this.  Help, please?  Many thanks in advance.