3D plot Z axis Range Setting invalid

[yang]

I want to draw these two 3D plots with the same scale, but it seems that SetRangeUser, SetAxisRange and SetLimits are all ineffective for a 3D plot. The Z axis range still changed automatically and uncontrollably.

[linev]

Try to specify minimum/maximum for the hstack like:

hhs->SetMinimum(0);
hhs->SetMaximum(15);

[yang]

Thanks a lot! It works.