Generating C Code for Pattern Recognition Neural Network

I am able to train a pattern recognition neural network and use it within Matlab. I want to be able to generate the c code so I can use the static network in an application. However whenever I use the function genFunction(net,'filename') to generate the standalone .m file I get the following error: "Undefined function 'genFunction' for input arguments of type 'network'." Documentation shows that this function should work with a trained network. Any direction would be greatly appreciated. Thank you.

http://www.mathworks.com/help/nnet/ref/genfunction.html

[Walter Roberson]

Which MATLAB version are you using?