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How to calculate man hours in repeating table?

Level 1
Level 1

I'm working with LiveCycle ES3.

I have a table that repeats using the built in button of ADD, REMOVE, UP and DOWN. Inside a column of the table I have another table that consists of 4 rows. All are time Fields StartTime, TimeField2, EndTime, and total. I don't need anything to happen with Time Field2. What I would like to see is the total field calculate the total man hours it took to complete that particular job. In addition there is a Checkbox that locks every field in the repeating table except the add button. This is to be used a log book for a fire department and needs to stay and be un editable once inputted. I'm using the following script in the calculate event for the total field. It works great until I save the form and check to box to lock out all the fields. I then get 0:18 in the total field and if I try and add more tables I get a NaN:NaN in the first table and nothing in the rest.

Hers the script I'm using

vTime1 = Row1.StartTime.rawValue;

vTime2 = xfa.resolveNode("Row3[0].EndTime").rawValue;

(vTime1.length == 4 && vTime2.length == 4) {

vTime1Minutes = parseInt(vTime1.substring(0, 1))*600 + parseInt(vTime1.substring(1, 2))*60 + parseInt(vTime1.substring(2, 4));

var vTime2Minutes = parseInt(vTime2.substring(0, 1))*600 + parseInt(vTime2.substring(1, 2))*60 + parseInt(vTime2.substring(2, 4));

if (vTime1Minutes > vTime2Minutes)

vTime1 = vTime2Minutes+1440 - vTime1Minutes;


vTime1 = vTime2Minutes - vTime1Minutes;


var Hours = Math.floor(vTime1/60);

var Minutes = vTime1%60;

if (Minutes < 10)

Minutes = "0" + Minutes;

this.rawValue = Hours + ":" + Minutes;

Any and all help on this matter would be greatly appreciated!

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