def changeVariables(self, source, variables):
        """Invoked when the value of a variable has changed.

        @see: L{AbstractComponent.changeVariables}
        """
        if variables in 'pollForStart':
            idd = variables.get('pollForStart')
            if not self._isUploading and idd == self._nextid:
                self._notStarted = True
                self.requestRepaint()
            else:
                pass
dataset/ETHPy150Open rwl/muntjac/muntjac/ui/upload.py/Upload.changeVariables/swapped operands of `in`