Is there a posibility to export a SVF from a DWG in an InventorPlugin

I am currently triying to use an Inventor Automation to modify a drawing and then export it to the SVF Format for the Viewer. Therefore I used this sample project from an Autodesk developer:

https://github.com/akenson/da-extract-params

I tried the code for exporting a 3D Drawing as SVF and that works fine. But when I tried to export a 2D drawing (like a DWG) to SVF, the SVF Addin doesn't create a file.

The Problem appears in the Method CreateForgeViewable() in the SampleAutomation Class in the ExtractParamsPlugin Projekt. I think the problem could be the configuration of the options for the Addin... But I couldn't find a Documentation for the SVF Addin.

// Setup SVF options
if (oAddin.get_HasSaveCopyAsOptions(doc, oContext, oOptions))
    {
        oOptions.set_Value("GeometryType", 1);
        oOptions.set_Value("EnableExpressTranslation", true);
        oOptions.set_Value("SVFFileOutputDir", sessionDir);
        oOptions.set_Value("ExportFileProperties", false);
        oOptions.set_Value("ObfuscateLabels", true);
    }

Is there any parameter, that I should set for exporting a DWG to a SVF? Or is there somewhere a documentation for this Plugin?

I would be really thankfull for a reply.

Best regards

Sebastian