nvarchar problen in sql 2005 & sql 2008

Question

My local system is with sql 2005,one field in a table declare as nvarchar(200),But the server supports sql 2008.When i upload any data in this field it stores only 50 charactors.Locally it runs fine,but on-line not.Locally nvarchar(200) stores 200 characters but on-line it stores only 50 characters
Suggest me.
Thanks in ad.
With regards
Naveen Verma