Cycle through values with 1 button

I know how to switch between 2 values but how to make a button to cycle through 0, 65, 127?

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edit 1: answering to myself here’s a script applying this to a modifier value. But it could be useful to cycle through a list instead. I continue to investigate…

i = self.get_modifier_value("m1")
m = 3
n = 1

if i + n < m:
    i = i + n
else:
    i = 0

self.set_modifier_value("m1", i)

self.log_message("csslog: " + str(self.get_modifier_value("m1")))

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edit 2: an attempt for list… any comment to improve is welcome

i = self.get_modifier_value("m1")
l = [0,50,100]
m = len(l)

if i + 1  < m:
    i = i + 1
else:
    i = 0

self.set_modifier_value("m1", i)

self.set_modifier_value("m2", l[i])

self.log_message("csslog: " + str(self.get_modifier_value("m2")))

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edit 3: add this script to apply to a selected parameter.

self.song().view.selected_parameter.value = self.get_value_from_ranges(False, m-1, False, self.get_modifier_value("m2"), l[0], l[m-1], 0, self.song().view.selected_parameter.min, self.song().view.selected_parameter.max, 2, False)