question about word automation(how to insert header)

hello

i am trying to develope an application for word automation.the application should generate a word document and need to insert a header into document.i have find the code from msdn and it works well.but i can't insert header.(i have found the code for inserting header from msdn too) but it doesn't wrok

this is the code i user for header:

foreach (Word.Section sectionin oDoc.Sections)

{

object fieldEmpty = Word.WdFieldType.wdFieldEmpty;

object autoText = "HELLO THIS IS HEADER";

object preserveFormatting =true;

//section.Headers[Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Text

ref fieldEmpty,ref autoText,ref preserveFormatting);

}

and when i run it,it write an error instead of header in header section. this is the error:

Error! Bookmark not defined.

dose anybody know how to insert header automatically?

any information is appreciated

Regards

Bluestar

[2979 byte] By [bluestar] at [2007-12-23]