User Guide

Button Manager NVP API April 2012 65
HTML Variables for PayPal Payments Standard
HTML Variables for Recurring Payments Buttons
A
Installment Plan Buttons HTML Variables
Name
Required
or
Optional Description
Character
Length
disp_tot Optional Display the total payment amount to buyers during checkout
Allowable values are:
 Y – display the total
 N – do not display the total
The default is N.
1
option_index Required
 If the button offers a single plan, use 0, or use a number
not used for option fields without prices, such as size and
color.
 If the button offers plan options, the cardinal number of
the option field, on0 through on9, with plan payment
options.
Include option_index if the number for the single plan or
options field is not 0.
1
option_select
n Required  If the button offers a single plan, the value attribute of a
hidden input field named os
n. The value attributes of
both elements must match, as the following sample code
shows
<input type="hidden" name="osn" value="pay-in-4">
...
<input type="hidden" name="option_selectn"
value="pay-in-4">
 If the button offers plan options, the value attribute of
the radio button for plan option
n. The value attributes
of both elements must match, as the following sample
code shows:
<input type="radio" name="osn"
value="pay-in-4">Pay in 4 installments
...
<input type="hidden" name="option_selectn"
value="pay-in-4">
8
option_select
n_
name
Required  If the button offers plan options, text next to the radio
button for plan option
n
 If the button offers a single plan, text that describes the
plan features
For example, you might use the text “Pay in 4 installments.”