How to subtract in a calculation in Acrobat Pro 9

[sander_wessel@adobeforums.com]

I'm building a pdf with some calculations. I can do a 'sum, product,average,minimum,maximum'. But how do i subtract 2 fields?

[George_Johnson@adobeforums.com]

You will need to use JavaScript in a field's custom calculation script. For example:


// Get first field value
var v1 = getField("Text1").value;

// Get second field value
var v2 = getField("Text2").value;

// Set this field value equal to the difference
event.value = v1 - v2;


You would replace "Text1" and "Text2" with the names of the fields you've set up.

George

[George_Johnson@adobeforums.com]

I should not have said you *need* to use JavaScript, because you can also use the "simplified field notation" option, but as you come to do more than the simplest of calculations, JavaScript is what you'll need.

If you want to use the simplified field notation option, you'd enter:


Text1 - Text2




but you'd replace Text1 and Text2 above with the names of your fields.

George

[sander_wessel@adobeforums.com]

your the best, gonna try it out!

[sander_wessel@adobeforums.com]

works!

[Unregistered]

Is there something that I can add to this that would not print a '0' in the field if both text1 and text2 don't have any data entered in them?

Thanks!

You will need to use JavaScript in a field's custom calculation script. For example:


// Get first field value
var v1 = getField("Text1").value;

// Get second field value
var v2 = getField("Text2").value;

// Set this field value equal to the difference
event.value = v1 - v2;


You would replace "Text1" and "Text2" with the names of the fields you've set up.