How to creat a multidomain 3-D PDE geometry consisting of two stakced cylinders of varying height and varying radiuses

I need to create for 3-D PDE thermal analysis.

The geometry represents a cylindrical building located on a section of the ground.

I can't use:

gm = multicylinder([R1 R2], [H1 H2])

because:

Error using multicylinder
Combination of varying height and varying radius not supported

How to obtain neede geometry using only Matlab commands, not any external 3_D modellers?

[Richard Moore]

I've got the same need. My target geometry can be trivially represented with cylinders, but I need to be able to vary both the radii and height of the cylinders.