Hello,
the widget does not provide dynamical settings for Max and Min.
If you need this, you have to use the Unitsystem from the OPC UA server => B&R Online Help
You can set different limits for different roles and also use other OPC UA variables for the limits. See B&R Online Help
For inputs you can also decide on the OPC UA server what action to perform when a limit is violated.
BR
Fabian