Hey,
Thanks for your support, i already added that "method" and "path" i.e of Libreoffice
but i was losing in "$docx = new TransformDocAdvLibreOffice();" .
After adding this to my file it is converting "docx" to "html", but there is issue in successfully generation of "html". The html file is not generated successfuly. If you wish i can attach that html file!!
One more thing that i downloaded it as pdf and it's aying like "Unable to open document"