Hello, i have a question of something that i already knew but i just forgot how to do it

In my HMI i have a setpoint, for example, i have a motor and i have a Setpoint option in the hmi to run the motor between 30-50hz.
The thing is, how i can limit the introduced value, for example.

1- I enter the value of 300, the value shown inside the box sets the max value available 50hz.

2- I enter the value of 300, an error message appears saying that the value introduced is bigger than 50hz and isn't accepted.

i totally forgot how to do it, i don't know if it was the (range-limits Hi/lo) inside the properties of that Hmi input.

But i'm not sure at all wich one was the most clean and professional way to limit the value introduced for the operator

Which engineering software are you using?