As you can see, I have a number of variables setup. However, I wish to multiply the 'lengthInchConverted' and 'widthInchConverted' and output them to a textbox called 'totalAreaCM'.
I have set the methods as public, however, I cannot access the variable from the top method. How should I go about fixing this?
In the second screenshot I commented out the line of code to better illustrate my point. The 'Calculate' button will be for something else in the future.