Changing the value setpoint at every 50s using elapsed time express

Hi. I am developing a tank level control system program using Neural Network based controller and trying to compare with PID based controller. I need to do experiment to compare results of these two controllers. In order to do that, I need to developed a scenario of changing the value of setpoint at every 50s. For example:

when t >= 50s    , Setpoint = 5

           t >= 100s  , Setpoint = 4

           t >= 150s  , Setpoint = 6

           t >= 200s  , Setpoint = 0

Can I use the Elapsed Time Express to execute this and how? I know that PID have the Setpoint Profile that can execute this, but for the Neural Network Controller can this be done using the Elapsed Time Express?

Thank you.