I have a create on account.voucher with data:

    'partner_id'=>new xmlrpcval($partner_id, "int"),
    'company_id'=>new xmlrpcval($company_id, "int"),
    'type'=>new xmlrpcval('receipt', "string"),
    'account_id'=>new xmlrpcval(1508, "int"),
    'period_id'=>new xmlrpcval(13, "int"),
    'journal_id'=>new xmlrpcval(8, "int"),
    'amount'=>new xmlrpcval($amount, "double"),
    'move_id'=>new xmlrpcval($move_id, "int"),
    'payment_rate'=>new xmlrpcval(1, "int"),
    'payment_rate_currency_id'=>new xmlrpcval(1, "int"),
    'date'=>new xmlrpcval(date('Y-m-d'), "string"),
    'comment'=>new xmlrpcval('Write-Off',"string"),
    'payment_option'=>new xmlrpcval('without_writeoff', "string")

After that, I'm doing a create on account.voucher.line, with following data:

    'partner_id'=>new xmlrpcval($partner_id, "int"),
    'company_id'=>new xmlrpcval($company_id, "int"),
    'voucher_id'=>new xmlrpcval($voucher_id, "int"),
    'amount'=>new xmlrpcval($amount, "double"),
    'type'=>new xmlrpcval('cr', "string"),
    'name'=>new xmlrpcval($invoice_name, "string"),
    'account_id'=>new xmlrpcval(1004, "int"),
    'move_line_id'=>new xmlrpcval($invoice_id, "int")

Now I can see the payment in odoo, but when I want to use the 'proforma_voucher' workflow, nothing happens. Also the 'cancel_voucher' does nothing.

Is there someone with a solution? :)