[API] Change Boss Feature's depth

Hello,

I have created a sketch ("Sketch1") and via extruded it via 'Extruded Boss' (to "Boss") to 2mm.

Now I want to change the depth of this extrusion in Visual Basic.

I already have the following code:

Dim baseDisk, metalDisk As SldWorks.PartDoc

metalDisk = openPart("MetalDisk.sldprt")

How can i change the depth of the feature?

Thank you very much!

SolidworksApi macros