Shorten number string

[joseph0D4B]

I am trying to create an Adobe form for use in a mailroom for package tracking numbers.  The person using the form will utilize a barcode scanner to receive packages from all different carriers (FedEx, UPS, USPS etc)

When scanning the barcode on a FedEx label, it populates a 34 digit string of numbers where only the last 12 digits are the actual tracking number.  I would like to use some sort of script within certain text fields to remove the first 22 digits (and only display the last 12).  I am a novice with Javascript and any help is much appreciated. 

In addition, if there is a way to use part of the number sequence to identify between FedEx Ground and FedEx Express, that would be awesome

[try67 · Accepted solution]

The question is whether the scan process triggers the normal events that are triggered when entering a value into a field.

If so, you can do it using this code as the field's custom calculation script:

if (event.value) event.value = event.value.substr(-12);

[joseph0D4B · Accepted solution]

What do you mean by normal events?  The plan is that the scanner will input the numeric sequence of the barcode followed by a tab key to advance to the next field. 

[try67]

Just try it and see if it works.

[joseph0D4B]

It worked perfectly, thank you