Second Y Axis on TH2F

Hi rooters,
I am a beginner, I’m running v5.30 of windows7.
I have a problem with an histogram (TH2F).
I’m trying to put two graphs on the same plot, with a second Y axis (on the right side).
I am trying following the online tutorials but I can’t repeat it on my script.
can you help me?
You can find attached the script
PS: I.m Sorry :blush: , I’ve already posted my topic directly to,
now I’ve joined the forum and I’m posting it again …here, only too to be sure.
multyplot_00.c (8.47 KB)

See $ROOTSYS/tutorials/hist/twoscales.C
and option X+ and Y+ here :