[EMBEDDED] Model.DeleteParts(geo_part_list) giving error

[dipinknair]

This behavior is seen only in embedding but no issues with batch mode or with Mechanical scripting window.
To replicate this after importing a geomtry

part_id_list = [3,7]
geo_part_list = [ExtAPI.DataModel.GeoData.GeoPartById(id) for id in part_id_list]
Model.DeleteParts(geo_part_list)

CRITICAL -  -  logging - handle_exception - Uncaught exception
Traceback (most recent call last):
  File "C:\Users\dkunhamb\Downloads\K18_Board (1)\K18_Board\pymech.py", line 21, in <module>
    Model.DeleteParts(geo_part_list)
System.ArgumentException: Argument must be an `IGeoPart` or collection!
Parameter name: parts
   at Ansys.ACT.Automation.Mechanical.Model.DeleteParts(Object parts)