I am trying to update an ntext field between two servers.
The sintax I am using is the following:

DECLARE @ploc binary(16)
DECLARE @prem binary(16)

SELECT @ploc = TEXTPTR(ntext_field)
FROM tablename
where id = 55298

SELECT @prem = TEXTPTR(ntext_field)
FROM SVR.DBNAME.dbo.tablename
where id = 55298

print @ploc
print @prem

UPDATETEXT tablename.ntext_field @ploc 0 NULL
[SVRNAME.DBNAME.dbo.tablename.ntext_field] @prem

I am testing a simple query to understand how it works
before doing an update on multiple records.
The pointer contains the correct values (if I run the
query on two local table it works fine), but if I run it
with a remote server the result is the local filed empty
without uptateing it.
The error is:
The number name 'SRVNAME.DBNAME.dbo.tablename' contains
more than the maximum number of prefixes. The maximum is 3
on the UPDATETEXT line.

Thanks for your help.

Dario