使用xml选择时如何显示字段？

如何解决使用xml选择时如何显示字段？

如何在使用 xml 选择其他字段时显示它？

场景：

fieldA 来自 account.voucher 并且有两个字段，分别是 field1 和 field2
fieldB 来自 account.voucher.line object

如果选择 field1，则显示 fieldB

如果选择了 field2，fieldB 将不可见

未捕获的错误：域中的未知字段 product_id.receipt_type [["fieldA","!=","field1"]]

    <record id="view_purchase_receipt_form_lineid" model="ir.ui.view">
            <field name="name">account.voucher.purchase.form.line.ids</field>
            <field name="model">account.voucher</field>
            <field name="inherit_id" ref="account_voucher.view_purchase_receipt_form" />
            <field name="arch" type="xml">
            
            
                <xpath expr="//field[@name='line_ids']//field[@name='price_subtotal']" position="after">
                    <field name="fieldB" string="Field B" attrs="{'invisible':[('fieldA','!=','field1')]}"/>  
                </xpath>
                
            </field>
        </record>

class AccountVoucherLine(models.Model):
        _inherit = "account.voucher.line"
        
        fieldA = fields.Selection([
                ('field1','Field 1'),('field2','Field 2'),],'Field Type',required=True,index=True)
        
    class AccountVoucher(models.Model):
        _inherit = "account.voucher"
        
        fieldB = fields.Char(string="Field B")