Problem in updating a column of type string of a db in matlab

Hey guyzz

I am facing a problem in MATLAB..

I have a column named 'address' of type text in 'Table1' and the its an MS ACCESS database...Now i want to update the row where roll=3 with the string 'hell' in matlab.....i m using the following command...

update(connA,'Table1',{'address'},{hell},'where roll=''3''');

Now it is giving the error as

??? Error using ==> database.update at 180

[Microsoft][ODBC Microsoft Access Driver] Data type mismatch in criteria expression.

Error in ==> db at 96

update(connA,'Table1',{'address'},{hell},'where roll=''3''');

Will post the solution as soon as i get to know..:

My First blog!!!!!!!!!!!

Hey guyzz this my first post here...Yeah i am a final year student at Delhi college of engineering with BE in Information Technology...I am building interest in blogging and i will keep posting about some of difficulties faced by me in technical areas and there solutions and other stuff...Hope u enjoy my posts and my blog :) :)