I am looking for an example where I can create warning popups while inserting data, for example in TCP Configurations, when you are entering the data above the max payload, you will get a message saying the maximum payload is 12.5 if we enter a value more than 12.5.
take a look at the User Input URCap Example.
It uses the InputvalidatorVactory and allows for the same warning messages as seen in the rest of Polyscope.