I have inherited the 'account_voucher.view_vendor_receipt_form' view. I have set an action to a button as follows.

When I click the button, a receipt dialog opens up and I enter an amount to be paid. This amount need not be the same as the total amount payable because I want to make a custom partial payment. So I enter my own amount in the view.

I want this amount, after hitting validate, to be stored in my own custom variable called 'amount_paid'

Can someone tell me how to get that value in a variable?

Code:

<record id="register_payment_button_action" model="ir.actions.act_window">

<field name="name">Register Payment</field>

<field name="res_model">account.voucher</field>

<field name="view_type">form</field>

<field name="view_mode">form</field>

<field name="domain">[('journal_id.type', 'in', ['bank', 'cash']), ('type','=','receipt')]</field>

<field name="context">{'type':'receipt'}</field>

<field name="view_id" ref="account_voucher.view_vendor_receipt_form"/>

<!-- <field name="view_id" ref="account_voucher.view_vendor_receipt_dialog_form"/> -->

<field name="target">new</field>

</record>