Calculate just once - serial number based on today's date

Use the "Default Value" to determine if you should do the update. When you create the form leave the 'Default Value" empty, create your script to update the Serial Number only when the Serial Number's default value is empty and when it updates the value of the Serial Number field is also updates the default value.. Clear the Serial Number's default value and save the form. The next person to open the form will have the serial Number entered in the value of the field and the default value, which prevents further updates. The advantage of using the default value is this that the default value will repopulate the Serial Number field is the form is reset for reason.

Thanks for your quick response.

I have tried this, however not having much luck. It still recalculates.

By the way I am using LiveCycle Designer and saving the form as PDF and then opening in Acrobat 7.07. In Acrobat, filled and saved under a different name and then reopend - the serial number changed than what it first showed in Acrobat. Each time it has a different value.

What event will you associate the code with? I have tried layout:ready and docReady.

What did you mean by "Clear the Serial Number's default value" - is this after I calculate? The default value in the Designer is set to empty.

Below is the code I am using:


if (this.isNull)
{
var currentDateTime = new Date();
var year = "0" + (currentDateTime.getFullYear() - 2000);
var month = "0" + (currentDateTime.getMonth() + 1);
var day = "0" + currentDateTime.getDate();
var hours = "0" + currentDateTime.getHours();
var minutes = "0" + currentDateTime.getMinutes();
var seconds = "0" + currentDateTime.getSeconds();

this.rawValue = year.substring(year.length-2, year.length)
+ month.substring(month.length-2, month.length)
+ day.substring(day.length-2, day.length)
+ hours.substring(hours.length-2, hours.length)
+ "-" + minutes.substring(minutes.length-2, minutes.length)
+ "-" + seconds.substring(seconds.length-2, seconds.length);
};

Well since LiveCycle Designer not support the "defaultValue" field property like Acrobat forms, you will have to create a hidden field to indicate that the serial number has been competed. The ".defaultValue"property is different than the ".value" property of a field and is not supported by LiveCycle Designer.