Help with a JavaScript for Addition and Subtraction

I need help with a JavaScript to add 3 fields then subtract the 4th field to get a total in the 5th field.

If someone could please take a look at the script in the field GRANDTOTAL, I would be so appreciative.

Community Expert

This has already been answered in another thread.

Thom Parker - Software Developer at PDFScriptingUse the Acrobat JavaScript Reference early and often

Community Expert

Your field names are wrong, JavaScript is case-sensitive, you also have issue with field calculation order.

Here is your file with script and calculation order fixed.

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