robot func in robotics toolbox

hi, I was trying to model a SCARA robot with DH using the robotics toolbox.

I was looking online and everytime I find something using the function robot. but my toolbox doesn't recognize it. what is wrong?

attached a link from an answer here, showing the use of the robot func

http://www.mathworks.com/matlabcentral/answers/6021-how-to-create-3-link-robot-using-robotic-toolbox