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Thanks for your request. Inserting new OLE objects into Word documents and updating existing OLE objects is not supported at the moment. Inserting an OLE object usually requires the host application and probably cannot be done by Aspose.Words.
What is supported is preserving OLE objects in documents. That is if you open an MS Word document and then save it (possibly in another MS Word format) then OLE objects are preserved. You can also access objects programmatically, extract their data and preview image. However, creating new OLE objects is not supported. This is the issue #3050 in our defect database.