citing a book

I have manually imported a book. I filled every related field in Mendeley desktop (1.10.3). When I use the Word plugin, everything shows up fine, except the total number of pages (NOT a specific page number, but pages in total). The style showing up in word: Wever, E. G. 1978. The Reptile Ear: Its Structure and Function. Princeton University Press, pp. The style I want: Wever, E. G. 1978. The Reptile Ear: Its Structure and Function. Princeton University Press, 1024 pp. How to correct this? I have already entered "1024" in the "Pages" field. Thanks, arita