How to custom calculate for a form field based on the total in another field. Tiered calculations

Question

Hi There! Super new to all of this so bare with me. There are 2 form fields that I am trying get to automatically calculate the tiered discount and tiered shipping... according to what the Subtotal is.

The TOTALDiscount Field and the TOTALSHIPPING field.

TOTALDiscount- I need to automatically calculate the discount received according to the SUBTOTAL and the following tier:
5% discount off of Subtotal for Subtotal that is $3500-$6999

10% discount off of Subtotal for Subtotal that is $7000 or more.

TOTALSHIPPING - I need to automatically calculate the shipping cost according to the SUBTOTAL and the following tier:

15% calculation of Subtotal if Subtotal is $1-$500

10% calculation of Subtotal if Subtotal is $501-$1000

7% calculation of Subtotal if Subtotal is $1001-$5000

4% calculation of Subtotal if Subtotal is $5001 or more

I hope this makes sense! Thank you for your help!

Nesa Nurani · Accepted Answer

Put script as "Custom calculation script" in:

TOTALDiscount:

var sub = this.getField("SUBTOTAL").value;
if(sub >= 3500 && sub <= 6999) event.value = sub*.05;
else if(sub >= 7000) event.value = sub*.10;
else event.value = "";

TOTALSHIPPING:

var sub = this.getField("SUBTOTAL").value;
if(sub >=1 && sub <=500) event.value = sub*.15;
else if(sub >=501 && sub <=1000) event.value = sub*.10;
else if(sub >=1001 && sub <=5000) event.value = sub*.07;
else if(sub >=5001) event.value = sub*.04;
else event.value = "";

Bernd Alheit · Answer

Use Javascript at Custom Calculation Script.

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