I need to disable price_unit if standard_price != 0 or profit_rate !=0.

My view:

    
        model="ir.ui.view" id="sale_order_view_inherit">
            name="name">sale.order.view.inherit1
            name="model">sale.order
            name="inherit_id" ref="sale.view_order_form"/>
            name="arch" type="xml">
                expr="/form/sheet/notebook/page/field[@name='order_line']/tree/field[@name='name']" position="after">
                    name="standard_price"/>
                    name="profit_rate" widget="percentage"/>
                
                expr="/form/sheet/notebook/page/field[@name='order_line']/tree/field[@name='price_unit']" position="replace">
                    name="price_unit" attrs="{'readonly': ['|', ('qty_invoiced', '>', 0), ('profit_rate', '!=', 0), ('standard_price', '!=', 0)]}"/>
                
            
        
    

But price_unit is disabled only when both standard_price != 0 and profit_rate !=0. Please help!