# Syntax error and no computation?

Community Beginner ,
May 02, 2019 May 02, 2019

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I am new to programming anything in an adobe created form; I am trying to calculate the shipping cost to be added to the subtotal of an order based on the quantity of items ordered. If the number ordered is less than 5, the shipping cost is 10% of the subtotal, if the number ordered is 5 or more, the shipping cost is zero. I wrote the following custom calculation:

var A=this.getField("TNB").value;

var B=this.getField("Subtotal").value;

var C=0.10*B;

if(TNB=>5){Shipping==0};

else {Shipping==this.getField("C").value};

I am getting the following error: "syntax error 5 at line 6"

Can someone help me

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Acrobat SDK and JavaScript

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Most Valuable Participant ,
May 02, 2019 May 02, 2019

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The == is wrong in several lines. == is used only in comparisons... does A equal B -- if ( A == B) ). Never used in assignments... set A to B -- A = B

Take great care over this, especially in comparisons. Even after decades of programming I sometimes write  if ( A = B )  with bad results.

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Community Beginner ,
May 02, 2019 May 02, 2019

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it is not calculating the shipping cost when the number is less than 5

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May 02, 2019 May 02, 2019

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What is the value of field "C" ?

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May 02, 2019 May 02, 2019

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Remove ; after }

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Community Beginner ,
May 02, 2019 May 02, 2019

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Removing the semicolon after the } eliminated the syntax error

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Most Valuable Participant ,
May 02, 2019 May 02, 2019

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Is this a custom calculation script of the "Shipping" field? If so, replace "Shipping==" with "event.value = ".

Also, you never use any of the variables you defined, but you reference an non-existing variable ("TNB") in line 4...

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Most Valuable Participant ,
May 02, 2019 May 02, 2019

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After changes, if it still doesn't work, please repost the new code, and let us know where the event is - what named field, what kind of event.

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Community Beginner ,
May 02, 2019 May 02, 2019

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I have changed the code as below:

var TNB=this.getField("TNB").value;

var B=this.getField("Subtotal").value;

var C=0.10*B;

if(TNB>4){Shipping=0}

else {event.value=this.getField("C").value}

it still shows zero, when TNB is 4 or less.

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Most Valuable Participant ,
May 02, 2019 May 02, 2019

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Use this:

var TNB = Number(this.getField("TNB").valueAsString);

var SubTotal = Number(this.getField("Subtotal").valueAsString);

if (TNB>4) { event.value = 0; }

else { event.value = SubTotal * 0.1; }

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Community Beginner ,
May 02, 2019 May 02, 2019

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Thank you very much! this works.

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