Negative numbers does not work in the calculation

I'm new to calculations of form fields and have encountered a problem that I can't solve. I have a form with calculations. There are four columns (beginning balance, revenue, expenditure and balance) the problem occurs when a negative number is specified for the opening balance. My calculation should start balance + revenue - expenses = balance but if a negative balance of start's ed and you tab to end receptions, enter received, expenses tab, enter the expenses, balance tab I get error "the value entered does not match the format of the field". "." If the opening balance is a positive number, there is not a problem. I can send someone a copy of the form if this help solve this problem. For any help or suggestion would be greatly appreciated.

I use Acrobat 9 Pro

Here is a sample of my closing balance calculation:

Get the first value in the field
"var v1 = getField (start Balance.7") .value;

Get the second field value
var v2 = getField("Receipts7").value;

Get the first value in the field
var v3 = getField("Expenditures7").value;

The value of this field value equal to the difference
Event.Value = v1 + v2 - v3;

Computers don't perform calculations using decimal values but convert decimal values in binary values, perform the calculation of the binary base and then convert decimal values. Since for many decimal value, there is not an exact conversion value a little mistake gets introduced in the values and the calculation. Change the 'None' format and expand the field for the result, we see a value-1.8189894035458565e - 12 or the value of-'0.' followed by 12 zeros, then the 1.8189894035458565 value. A very small value. If we round the value of the calculation (not the format displayed in the Format option) you can get the answer of $0.00. We can check this result by changing the 'Format', 'None' option and expanding the field to account for the long value.

I would use the util.printf method to perform the rounding for the result of the calculation.

Your calculation script could be:

Get the first value in the field
"var v1 = getField (start Balance.7") .value;

Get the second field value
var v2 = getField("Receipts7").value;

Get the first value in the field
var v3 = getField("Expenditures7").value;

The value of this field value equal to the difference
Event.Value = util.printf ("%,101.10f", Number (v1) + Number (v2) - Number (v3));

This script rounds to 10 decimal paces ensuring that the result will be the value that can be displayed using the number format.

Tags: Acrobat

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