Flex Gui preset buttons

I have some override preset buttons for  feed_percent_ , rapid_percent_,  spindle_percent_
I'm still doing simulation.Only on a MDI axis movement or run a program, if one of those buttons pressed, it doesn't release 
for about 5 seconds, and the DRO doesn't update for the same period. Otherwise it switches instantly. There is no plotter at the moment.

and more:
_To display 'rotation_xy_lb' (returns float), i am unable to set precision to 3 digits. Depending on calculation, it is filling the label.

_Is there something similar to bool label, but to display a .png? For spindle is on, or spindle at speed and others it would be a good alternative to text.