Using Combo Boxs to Prepopulate Form Field

In the article I use hard coded field names for populating the result of the selection. Since you have multiple ComboBoxes with identical contents you need some way to automatically generate the field name. If you had several fields to populate at once from each combo I'd say that you need to use a parallel naming convention between the comboboxes and the text fields. In fact you already have this, i.e., "ProductCode.0.1" matches "ProductName.0.1"(Good thinking up front) . You can pass the name of the combobox into the function that does the prepopulation and then use JavaScript string manipulation functions to generate the name of the text field. Take a look at this article

[url=http://www.acrobatusers.com/tech_corners/javascript_corner/tips/2006/string_splitting/]http://www.acrobatusers.com/tech_corners/javascript_corner/tips/2006/string_splitting/[/url]

However since you're only dealing with one text field there is a much easier way. Just pass the text field name into the function that does the prepopulation. So your custom keystroke event will look like this.
Then the document level script that does the field population would look like this.

Of course I'm using the code from the article, you'll have to adjust it to your setup.

A couple of other things. It really is better to use the string manipulation to automatically create the field names. For the easy method I've outlined above the code in each combobox is different by one thing, the name of the field to be populated. In the automated method the code is exactly the same everywhere. The only difference the in the name of the fields themselves. This make for more robust and easier to maintain code. And another thing, the code in the article was written to be easy to follow. A much better design would be to put a single function call into the Keystroke event of the combobox. This way all the code is in a single location. You can change how all the comboboxes work by only changing code in a single location. The trick to doing this is called abstraction. You have to be able to generalize the code to work with any comboboxes by using it's name. This is kind of an advanced thing.

Hi Thom
I tried my interpretation of your scripting and I was unable to make it work. I am sure my sripting is not correct. Here is what I put for the custom keystroke event in ComboBox labelled ProdCode.0.0

if(event.willCommit)

{
if(event.value == "")
this.resetForm(["ProdName"]);

else
SetFieldValues(event.value,"ProdName.0.0");
}

At the document level script I put:

//Place all prepopulated data into a single data structure
var ProdData = {P#123:{name:"Paper"},E#123:{name:"Erasers"}, S#123:{name:"Staples"}};
function SetFieldValues(cProdCode, cProdName)
{
this.getField("cProdName").value = ProdData[cProCode].cProdname;
}

Like I said excuse my ignorance, since this is all new to me.
P#123, E#123 and S#123 represent the items in the list of product codes in the DropDown Boxes. Paper, Erasers and Staples are the corresponding Product Names. When I chose a product code from the 1st dropdown box I only want the product name to populate once in the text field underneath it. Then I go on to the 2nd dropdownbox and chose an item to be populated in the 2nd text field underneath and so on.

Please let me know how I can fix the sripting to make this work. Also, I used the scripting from your article "Changing Another Field with Combo Box Selection" because I am totally new to JavaScript. Therefore if there is an easier way to script this question please explain it to me.
ThankYou

I have finally made my form work!
Just in case anyone else is interested, here is the scripting I used:
In the Combo Box Properties Format Custom Custom Keystroke Script Edit
I entered:

if( event.willCommit )
{
if(event.value == "")
this.resetForm(["ProdName.0"]);
else
SetFieldValues(event.value,”ProdName.0”);
}(Change the ProdName field in each Combo Box to correspond to the text field name below it. E.g. “ProdName.0” , ”ProdName.1” etc.)

In the Advance Document Processing Document JavaScript JavaScript Functions
I eneterd:
Script Name: SetFieldValues Add

//Place all prepopulation data into a single data structure
var ProdData = {a123:{name:"Apple"},
b123:{name:"Banana"},
p123:{name:"Pear"},
o123:{name:”Orange”}};
function SetFieldValues(cProdCode,cProdName)
{
this.getField(cProdName).value=ProdData[cProdCode].name;
}