Use Dynamic stamp to make calculations

To set the value of the total invoice amount field, you must be using a calculate script to set the field value. In that same script, just calculate the two percentages and set the values of the other fields. If you'd specific help with the script, post again with what you already have and include the field names of the other two fields.

Thanks- Here's what I have:

Field 1: box pops up and asks "Code". User inputs accounting code

Field 2: Box pops up and asks for "Invoice Amount". User enters amount.

Current Script for Field 2
var cAsk = "Invoice Amount" ;
var cTitle = "Invoice Amount: ";
if(event.source.forReal && (event.source.stampName == "#J2ptEmYC91A9ZmP5LsJlBD"))
{
var cMsg = app.response(cAsk, cTitle);
event.value = cMsg;
event.source.source.info.exhibit = cMsg;
}

After this I need Field 3 to show 48% of field 2
Field 4 to show 52% of field 2

Add something like the following to the end of your existing script:

if (!isNaN(+cMsg)) {
getField("Text1").value = util.printf("%.2f", .48 * +cMsg);
getField("Text2").value = util.printf("%.2f", .52 * +cMsg);
} else {
getField("Text1").value = "";
getField("Text2").value = "";
}

It first attempts to convert the input to a number and tests to make sure the result is a number. It then sets the other fields values to the calculated amounts (to two decimal points), or blanks the fields if the input does not convert to a number (e.g., if the user enters letters.) Change to suit your needs.

Also, change the field names "Text1" and "Text2" to match the field names you're using.

It worked!! Thanks so much.