variable layer height - min / max change  

variable layer height - min / max change

Hello,
variable layer height is a great function, however it is quite difficult to keep it constant in specified values for the specified area.
Automatically the highest detail position makes layer 0.07mm and lowest detail position 0.25mm. In between these values it is just a gues.
I would like to make 0.2 in low detail and 0.1 in high detail. The middle (default layer height) is set to 0.15.
I tried to search in the settings, if I can define the min and max detail values and really found one. It is on the object settings, layers tab. I defined manually requested values. Looked perfect solution. But unfortunately it had no impact on the final gcode. I re-sliced the model, I also tried to set the detail levels again in layer editing. No change. Still 0.07 - 0.25.
Do you know if the setting I found is for this feature? What I did wrong? Any workaround (except for fine tuning by try and error)?
Used Slic3r PE 1.36.2.
Thanks for help.

Milos.