@JEY,
This would work in the same way as passing your calendar data. Use a global variable to store the value of a user’s threshold limit (and another global variable to store their requested amount, if needed) and set these values on Page 1. Then, on Page 2, in the Page Loaded event (or Loaded event of an individual widget) use conditional cases to test the values of the global variable(s) and handle the cases accordingly–showing an error message or not, etc.
I recommend taking the time to follow through this tutorial to learn the basics of using global variables between pages: