Help with understanding error in RooFit

Hi,

I can't make sense of the error below I am getting with a simple RooFit macro (attached).

Error: Symbol x,hdata) is not defined in current scope workspace.C:15:

Can someone explain what is wrong? Thanks a lot.

-- 
Suvayu

Open source is the future. It sets us free.






text/x-csrc attachment: workspace.C