PayPal Button Manager API (NVP)

HTML Variables for PayPal Payments StandardHTML Variables for Recurring Payments ButtonsAInstallment Plan Buttons HTML VariablesNameRequiredorOptionalDescriptionCharacterLengthdisp_tot Optional Display the total payment amount to buyers during checkoutAllowable values are:• Y – display the total• N – do not display the totalThe default is N.option_index Required • If the button offers a single plan, use 0, or use a numbernot used for option fields without prices, such as size andcolor.• If the button offers plan options, the cardinal number ofthe option field, on0 through on9, with plan paymentoptions.Include option_index if the number for the single plan oroptions field is not 0.option_selectn Required • If the button offers a single plan, the value attribute of ahidden input field named osn. The value attributes ofboth elements must match, as the following sample codeshows118...• If the button offers plan options, the value attribute ofthe radio button for plan option n. The value attributesof both elements must match, as the following samplecode shows:Pay in 4 installments...option_selectn_nameRequired • If the button offers plan options, text next to the radiobutton for plan option n• If the button offers a single plan, text that describes theplan featuresFor example, you might use the text “Pay in 4 installments.”Button Manager NVP API April 2012 65