Transact SQL :: How To Retrieve Value From UDT

I want to reach and display the value of @data inside if [wwtest].

The UDT is from the database [test] and I retrieve an error message "The type name 'test.dbo.tvf_id' contains more than the maximum number of prefixes. The maximum is 1.".

I don't know how to retrieve the data from the database test inside of the query document for [wwtest]?

create table datatable (id int,
name varchar(100),
email varchar(10),
phone varchar(10),
cellphone varchar(10),
none varchar(10)
);

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