Hide form fields till calculated in Acrobat

[bischerboy]

Hi,

have three fields, values a, b & c.
a is blank till user input; b and c are calculations of a.

Currently the default values of b and c are showing as $0.00.

Is it possible for these just to be blank until field a is input?

Any suggestions gratefully received...

 

[bischerboy]

Just found the solution:

In the field's Properties under 'Validation', select 'Run Custom Validation Script' and 'Edit' with the following script...

if (event.value == 0) event.value = "";

This should keep the field blank until an amount is entered in the previous fields...