how to check weather the values are constant or fluctuating over a period of time and give a output in one or zeros in a simulink model

in the above image the values are changing between 1 and 0 this is because vales are not in an increasing order

in the above image the values are constant 1 ( for 50 seconds)

i want to develop a model that can read the values till the 50 seconds and return a value of 1 if the values are flautuating like image 1 and 0 if the values remain constant (1) for fifty seconds