Odoo Ver. 17.0 last build

I need help with this and tks

I have this model "cost.fleet.vehicle.fuel" in delegation inherit from "product.product" (inherit from product.template)

class costFleetVehicleFuel(models.Model):
	​_name="cost.fleet.vehicle.fuel"
	​_inherits = {'product.product': 'product_id'}
	​_description = 'Vehicle Fuel'

	​product_id = fields.Many2one( 'product.product', 'Product Id',auto_join=True, index=True, ondelete="cascade", required=True)

I imported xml data without problems through this model cost.fleet.vehicle.fuel, odoo creates the cost.fleet.vehicle.fuel registry, product.product registry and the product.template registry 

(I deleted of the code greater-than and less-than symbols)

record id='provider01' model="res.partner"> 

​field name="name">provider X

/record
record id="cat_fuel" model="product.category"

​field name="name">Fuel

/record

record id="prod_fuel_1" model="cost.fleet.vehicle.fuel" 

​field name="name">Fuel 88 /field

​field name="categ_id" ref="cat_fuel_gasoline"/

​field name="standard_price">6000.0 /field

​field name="uom_id" ref="uom.product_uom_litre"/ 

​field name="uom_po_id" ref="uom.product_uom_litre"/ 

field name="sale_ok">False /field

/record

----this record is my problem --

​record id="product_supplierinfo_1" model="product.supplierinfo" 

​field name="product_tmpl_id" ref="?????????"  ---- this line is my problem

​field name="partner_id" ref="provider01"/ 

​field name="delay" 1 /field 

​field name="min_qty">1 field name="price" 6000.0 /field 

​field name="currency_id" search="[('name','=','PYG')]"/ 

/record

Question: How Can I to reference to ('cost.fleet.vehicle.fuel').product_id.product_tmpl_id.id in the xml to insert registries in the model : product.supplierinfo, my problem is the reference  to "id" of product.template

I have not found much info over ref o eval

tks for you help