I need some help with this one I am not getting it to work and im not sure why

N. Weekly Temperatures with Validation Programming Challenge 3 in Chapter 3 asked you to create an application that asks the user to enter weekly temperature readings over a five-week period. In this version of the application, you will perform more detailed in validation. Once the values are entered and the user clicks the Calculate Average button, check each input field for two criteria: 1. The temperature must be numeric 2. The temperature must be between -50 and +130 If any single input field is incorrect, you must identify the field and the error by print- ing a message in the control and moving the focus to the incorrect field. N. Weekly Temperatures with Validation Programming Challenge 3 in Chapter 3 asked you to create an application that asks the user to enter weekly temperature readings over a five-week period. In this version of the application, you will perform more detailed in validation. Once the values are entered and the user clicks the Calculate Average button, check each input field for two criteria: 1. The temperature must be numeric 2. The temperature must be between -50 and +130 If any single input field is incorrect, you must identify the field and the error by print- ing a message in the control and moving the focus to the incorrect field