table.insert(**mydict) returns Field auth_user does not belong to the table

[António Ramos]

Hello this is my model and code. Apparently all is ok but i get the error

Field auth_user does not belong to the table

any help ???

Code and model....

mydict={"event":"testing testing",auth_user:4}

db.entities.insert(**mydict)

db.define_table(

    'events',

    Field('event', 'text'),

    Field('auth_user', db.auth_user,default=auth.user_id),

    ...

)

[António Ramos]

wrong Table!!

Thank you!!