Create a check box on a price list that if checked gives $0 total

[LHGgraphics]

I have a plumbing supplies price list which consists of 5 pages of items, each with a check box. These items total into the subtotal field if checked. Now, the client wants a variable that if the purchase is for a model home, there is no charge. I already have a "model home" check box, so I need to find out how to set this up so that if it is checked, the "sub total" field is "0". Is there an easy way to do this?

[try67]

Can you post the current code you're using for the calculation of the sub total field?

Basically, adding this line to the end of it should do the trick:

if (this.getField("model home").value!="Off") event.value = 0;

[LHGgraphics]

Thanks so much for responding so quickly!

I currently am using the "Value is the sum of the following fields" and then I selected my fields page 1 total, page 2 total, page 3 total, page 4 total, page 5 total

Is there a way I can use a custom calculation to do the same thing? I am brand new to Javascript.

[try67 · Accepted solution]

You can use this code as the custom calculation script for sub-total:

if (this.getField("model home").value!="Off") event.value = 0;
else event.value = Number(this.getField("page 1 total").value) + Number(this.getField("page 2 total").value) + Number(this.getField("page 3 total").value) + Number(this.getField("page 4 total").value) + Number(this.getField("page 5 total").value);

[LHGgraphics]

That worked! Thank you so much!