Trying to append a new line character

Hi,
i am using open xml to create a word document, however the text comes from a text box. Incase a user enters couple of paragraphs I want it to be displayed in the same style in the word document i am creating ....I have tried couple of ways to get this but some times the line break up from the middle(even without a new line character) and appends to a new line. I have used a similar code like the below one but no go
http://stackoverflow.com/questions/2871887/inserting-newlines-in-word-using-openxml
The code i am getting does have a new line character appened to it...
but it gets appended in this fashion even without a new line character. Any suggestions on this pls?