Just for completeness and @chanpua you might have figured this out already - While it is not possible to have an actual "Slider" in the floating Palette it is possible to use the same Mark Macro Action to get something similar (i.e. to set from a list of values and see on the Palette itself, which one is set). Instead of the Macros being just Marked or Unmarked, all the unused Value Macros get unmarked when one Value is used.
EXAMPLE "Slider" in Floating Palette Macros.kmmacros (65.6 KB)
