How the installment of the plot works with Pagseguro

Question

I am implemented the payment part with credit card however when I will put the installments it returns me the following error:

HTTP 400 - BAD_REQUEST [THE REQUEST CANNOT BE FULFILLED DUE TO BAD SYNTAX]
53041 - installment value invalid value: 5002.00

I think it should be due to the values, how and the correct implementation of installments?

Code:

    request.setShippingType(ShippingType.SEDEX);

    request.setShippingCost(new BigDecimal("2.00"));

    request.addItem(new Item("1", //
            "Notebook Prata", //
            Integer.valueOf(1), //
            new BigDecimal("2500.00")));

    request.addItem(new Item("2", //
            "Notebook Rosa", //
            Integer.valueOf(1), //
            new BigDecimal("2500.00")));


    request.setInstallment(new Installment(2, new BigDecimal("5002.00")));