```
Traceback (most recent call last):
  File "/home/chris/dev/qtpyvcp/qtpyvcp/widgets/base_widgets/base_widget.py", line 122, in rules
    self.registerRules()
  File "/home/chris/dev/qtpyvcp/qtpyvcp/widgets/base_widgets/base_widget.py", line 167, in registerRules
    trigger(exp)
  File "/home/chris/dev/qtpyvcp/qtpyvcp/utilities/settings.py", line 121, in notify
    slot(self.value)
TypeError: <lambda>() takes no arguments (1 given)