Attaching an extension to a model via script

Hi,

quick question to one of the PD gurus:

How to create a model by script and add an existing extension to it.

I'm able to create a model using the CreateModelFromTemplate function based on a template the extension is already attached to, but how to do the same using CreateModel? Is there a parameter wich allows to add an extension?

I was trying with CreateModel (PdEAM.cls_Model, EvaluateNamedPath("%_MODELS%") + L1Process.Name + ".eam|Diagram=CityPlanningDiagram|ExtendedModelDefinitions=" + EAMExtensionPath, omf_DontOpenView) since there is nothing about it in the documentation. Of course I failed ...

Any ideas?

Regards,

Rafal