Spindle GtkHscale[scl_spindle] error

Thank You!
That way it work for me, too.

My way is:
set in gmoccapy_preferences spindle start_rpm = 3000.0
get out of estop
switch the machine on
home all axis
goto settings page
click on button halshow
add to watch tab
* motion.spindle-speed-out-rps
* motion.spindle-speed-out-abs
* motion.spindle-speed-out
go back to manual tab
change the slider and I see values do change
stop the spindle pressing the stop button
values are zero
start spindle in reverse and watch the values
change the override slider and l see the values do not change

My way is:
set in gmoccapy_preferences spindle start_rpm = 3000.0
get out of estop
switch the machine on
home all axis
goto settings page
click on button halshow
add to watch tab
* motion.spindle-speed-out-rps
* motion.spindle-speed-out-abs
* motion.spindle-speed-out
go back to manual tab
start spindle in forward and watch the values
change the slider and I see values do change
stop the spindle pressing the stop button
values are zero
start spindle in reverse and watch the values
change the override slider and l see the values do not change