How can I run examples I found on the MathWorks site?

I wanted to run the following example:

Single Track Model Simulink

I clicked on "try it in Matlab" and copied "openExample('ident_featured/idnlgreydemo11')" in the comand window but It didn't work. See the following error code:

Error using findExample (line 25) Invalid argument "ident_featured/idnlgreydemo11".

Error in setupExample (line 5) metadata = findExample(arg);

Error in openExample (line 10) [metadata,workDir] = setupExample(varargin{:});

What did I do wrong? Do I have to install something before trying?

Thanks in advance! Patrick