How to edit character change conditions in PI-VISION

Could you please tell me the basics of how to use PI-VISION?

 

I have a screen that has already been created.

I am displaying the screen on a browser and using it.

Some of the text in the screen has a mechanism that changes the characters by referencing PI data.

There is one character incorrect in the address of that data, so I would like to make a change.

Please tell me how to do this specifically.