ROOFIT: Plot options: line + filled area

Dear Experts,
can you please tell me how can I plot in RooFit a dashed line together with the filled area ?
In other words I would like to show both the line AND the filled are underneath.
Can you please tell me which are the commands I need to use ?

(I’m able to either plot the line or the filled area, but not both)

Thanks,

  • Mauro.