How to show/hide "field Z" if "field Y" is within 10 digits of "field X"?

[mynameisjberg]

I'm trying to create a form that determines if a patient requires a particular lab based on their history. "field X" is the patient's age and "field Y" is another age. I'm trying to create a script that determines if "field Y" is plus or minus 10 years of the age in "field X". If it is within 10 years I want "field Z" to show. If the age isn't within 10 years, then I want "field Z" to remain hidden.

I'd appreciate any help with this. I'm almost done with this form and it's looking great so far. Thanks in advance!

[try67 · Accepted solution]

Enter this code as the custom calculation script of "Z":

var x = this.getField("X").valueAsString;
var y = this.getField("Y").valueAsString;
if (x=="" || y=="") event.target.display = display.hidden; // if either field is empty, hide this field
else event.target.display = (Math.abs(Number(x)-Number(y))<10) ? display.visible : display.hidden;

[mynameisjberg]

Thanks! This worked perfectly.