Simple program to show the use of a list. One list is called Name and the other is called Score. A allows you to add a new name and score to the list. It will verify that the score is number. S allows you to iterate through the list and see if a name is in the list. If it is, it will return the associated score. If the name is not in the list, it will tell you that the name wasn't found.
I created a customized block to tell if what is entered is a number. (We only want scores to be numbers.) I tried a few options but found the best method was to first, check if the value was zero. If it is, it's a number. Otherwise, divide the value by itself and check if that is 1. A number divided by itself (except for 0) will always give a value of 1. A text value divided by itself returns 0.
