I've made a custom payment acquirer but it not go to destination website and has no error just pending :

<odoo>
    <template id="behpardakht_form">
        <div>
            <input type="hidden" name="data_set" t-att-data-action-url="tx_url" data-remove-me=""/>
            <input type="hidden" name="reference" t-att-value="reference"/>
            <input type="hidden" name="amount" t-att-value="amount"/>
            <input type="hidden" name="currency" t-att-value="currency.name"/>
        div>
    template>
odoo>

where should i define the destination url ?

when i push the button pay now it goes to /shop/payment/transaction/ with status 200 but stay still in my website without any action