How to write script so that when checkbox is checked, a subtraction is completed

Question

Hello,

I am making a somewhat follow-up post to my previous one involving the same form from that last post. Here is the link to that question.

What I am trying to do now is there is a checkbox next to my Site Assessment. I want it so that when the checkbox is checked, the site assessment gets subtracted from the total. I've tried a few different code options and it still doesn't want to compute for me.

Here is a sample of what I wrote:

// if Assessment Paid box is checked, subtract assessment from RequiredTotal

if (this.getField("Assessment Paid").value != "Off")Number(this.getField("RequiredTotal").value) - Number(this.getField("Required").value);

Any help would be greatly appreciated, thanks in advance!

if (this.getField("Assessment Paid").value != "Off")Number(this.getField("RequiredTotal").value) - Number(this.getField("Required").value); Any help would be greatly appreciated, thanks in advance!

Nesa Nurani · Accepted Answer

You didn't include where to show result of substraction. if you want to show result in field where you put calculation use event.value, something like this:

if (this.getField("Assessment Paid").value != "Off")

event.value = Number(this.getField("RequiredTotal").value) - Number(this.getField("Required").value);

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