Formula not working in Adobe FormsCentral

Question

I have a formula which I have embeded into my PDF Form using Adobe Acrobat. All is fine and dandy in Acrobat, but the formula does not work when it is imported and converted for FormsCentral, I have to manually calculate the formula into the field which completely throws a wrench into the automation process that I am trying to create. My job is to issue Certificates of Completion, the form I have created has fields where I can submit the name, address, and use a formula to calculate the overall GPA to see if the person qualifies.
FormsCentral gives you the ability to export your collected responses into a spreadsheet for Excel. By submitting the address along with the name and qualifications, I am able to use this data to create and automate shipping labels for all qualified students using Excel and Word in an instant. Having to manually calculate this data can result in human error, such instances can occur if you're processing over a hundred certificates per quarter.
My initial impress that I got from upgrading to the premium version of FormsCentral was that I would be able to collect the same data that I have setup in my PDF form using Acrobat, but that doesn't seem to be the case.
Formulas are by far the most important feature to have in my opinion as they are used for automating a workflow and eliminating human error.

Answer 1

OK, here's a custom calculation script you can use in the text field after you remove the export values from the dropdowns:
// Custom calculation script for text field
(function () {
    // Object to associate a letter grade to a numeric value
    var oGrades = {
        "A+": 4, "A": 4, "A-": 3.7,
        "B+": 3.3, "B": 3, "B-": 2.7,
        "C+": 2.3, "C": 2, "C-": 1.7,
        "D+": 1.3, "D": 1, "D-": 0.7,
        "F": 0
    // Get the field values from the dropdowns
    var v1 = getField("Crim_I_Grade").value;
    var v2 = getField("Crim_II_Grade").value;
    var v3 = getField("Sight_C_Grade").value;
    // Get the corresponding numeric values from the Grades object
    // Default to 0 if the letter grade isn't found in the object
    var v1a = oGrades[v1] || 0;
    var v2a = oGrades[v2] || 0;
    var v3a = oGrades[v3] || 0;
    // Calcualte and set this field's value, rounded to two decimals
    event.value = util.printf("%.2f", (v1a + v2a + v3a) / 3);
This isn't necessarily the most efficient code, but I wanted to make it easy to follow. It rounds the result to two decimal places. Let me know if you have any questions about it.