(SIM) ALLOWING CUSTOMERS TO CHOOSE THE AMOUNT TO PAY.

[YAKTOWNH279]

I'M USEING THE SIM API, WHEN THE HOSTED PAYMENT FORM COMES UP THERE IS A SET AMOUNT PLACED ON THE FORM. I WANT MY CUSTOMERS TO BE ABL TO ENTER THE AMOUNT THEY WANT TO PAY AT THAT TIME. HOW CAN THIS BE DONE? 

[Elaine]

Hi YAKTOWNH279,

When you use the hosted payment form you must have the end-user specify the amount prior to transferring them to the Authorize.Net hosted payment form, as the fingerprint which is generated in your SIM code and which allows a successful transfer to the hosted payment form requires an amount to have been specified for calculation of the fingerprint value. You can place a simple page on your server where the customer can specify this amount for this calculation if you'd like. A simple HTML example of this is:

<h1>Example page</h1>

<br>

<br>

<form method="post" action="simphp.php">

<br>

<br>

          Donation Amount:<br>

          <input value="">

          <br>

<br>

<br>

<input>

</form>

<!-- END HTML PAGE -->

You will also need to make adjustments to you SIM code file to expect and use the amount included in the POST.

Thank you,

Elaine