the table is product.template and product.product and I need put the row in product.public.category.product.template.rel

this is my code:

vals_product_category = {'product_template_id':id_product_template,'product_public_category_id':id_category[0]}
# print vals_product_category
id_product_category = object_proxy.execute(DB,uid,PASS,'product.public.category.product.template.rel','create',vals_product_category) 

but I have this error:

xmlrpclib.Fault: <Fault warning -- Object product.public.category.product.template.rel doesn't exist