Clearing a text box

I have a text box (Box1) set to numeric entry. Another calculated field (Calc1) performs a calculation based on the number in Box1. If I hit the little x in Box1 it will clear the contents of Box1, but the calculation remains in Calc1. The only way to reset the value in Calc1 is to return to Box1 and hit a backspace in the empty box. Why won't the little x clear out the contents properly?

I noticed that you have created two separate thread for the same issue. We will attend to your concern on the other thread that you have created. You can check the other thread here: https://support.jotform.com/answers/899877. 

Regards.