Solved Undo's and SendModelingCommand

I am not sure how to / where to place Undo's when using a CSTO.
Should it be before (with an UNDOTYPE_CHANGE) or after (with an UNDOTYPE_NEW)?

        #doc.AddUndo(c4d.UNDOTYPE_CHANGE, poly)        
        objList = c4d.utils.SendModelingCommand(
            command = c4d.MCOMMAND_CURRENTSTATETOOBJECT,
            list = [poly],
            mode = c4d.MODELINGCOMMANDMODE_ALL,
            doc = doc,
        doc.AddUndo(c4d.UNDOTYPE_NEW, objList[0])

Hi @pim only UNDOTYPE_NEW is needed.

Moreover, I would like to mention that SendModelingCommand offers the MODELINGCOMMANDFLAGS_CREATEUNDO flags in order to automatically creates undo.