Can't Access VCLObject from COM

I am trying to access VCLObject, a delphi native object from COM. I am able to run TestComplete as a COM application from python but the method Process("...").VCLObject("...") does not work. How to I get a VCLObject from an external COM application?

...Process('...').VCLObject('fmMain')

This is always None or null when I debug it in my application. Note that Process is valid and I can get other objects in the application with it.