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What is it that you want to detect by comparing the text fields?
For example: Do any two textfields have the same value?

If all the textfields are in an array, then going thru the array should be...

Then you mean you want to compare the contents of two text fields? Is that right?

There is a variable on line 83 that has a null value. Look at that line, find the variable and backtrack through your code to find out why and change it to give the variable a valid value.

How do...