Hi macropod,
Thanks for the replay. basically i am create a document for events. So i have template doc with merge field. Which will be replace with actual information and new document is save for the event. each event have different information so document should be created from the scrach for the each event.

But your process isn't using mailmerge, so why are you using mergefields? What you're doing is a total misuse of them. If you're not doing a mailmerge, you should be using bookmarks, or maybe even content controls. As it is, though, automating a proper mailmerge might significantly simplify things. Nevertheless, whether you use mailmerge or some other form of automation, you'll need to parse your value data after it appears in the document.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]