How to handle the word document which is already opened(Add content to it) using VbScript using "Word.Application" method

Question

Hello,
I want to add some content to the word document which is opened already and active using vbscript.
Here is the sample code to have an idea.Kindly Help.
Set oWord = CreateObject("Word.Application")
oWord.Documents.Open
"c:\test.docx" ----->Here i dont want to open the Document as such as my document which is opened already,i have get the control over that document-I try to achive this by using HP UFT tool for word document automation
oWord.Selection.EndKey
6,0
oWord.Selection.TypeText
" This text has been entered by opening the exisitng document. "
oWord.ActiveDocument.Save
oWord.Quit
Set oWord = Nothing

Answer 1

Hello,
Nice to see the Reply from you. I have done the same thing what you have suggested but unfortunately i am not achieving the result as expected.
Here i explain you clearly,
Business Scenario:
Using an aplication we will create word documents-To do this we need to fill all the document properties and click on OK button-After this,Application automatically launches a Word Document with the File name given by itself as per the Configuration and
it will be available for the Editing-After user add content,he has to check in the document in the application in order to replicate the changes made by user to the document-This is the Business process
Here my Document actually resides in the Users Folder-"C:\Users\narayanasamy_r\Documentum\Checkout\" before checkin event happened,once i add content,save,close the document,i will navigate to the document in the application  and Do check-in
operation.
Interesting point is that,after i do check-in operation my actual document which was resided in "C:\Users\narayanasamy_r\Documentum\Checkout\" will not be available anymore
So My logic Should be,
1.identify that particular Document from the Folder and add content,save and close(Note:i dont want to open the document from "word.application" control here, as the application itself opens up the Document)
Kindly Help On the same.
Thanks,
Narayan