update ms access check box column

Question

hi all.. in my ms access database am using check box column.

there is a no problem when inserting the row in the database.

but when am updating the check box column. it will show "datatype mismatch".

how can i handle this.....

here is my code...................

  internal void updatestbInfo(string stbnumber, string stbname, int price, string purchasedate, string description, bool isactive)

       {

           cn.Close();

           cn.Open();

           cmd = null;

           cmd = new OleDbCommand("update STBINFO set  stbno=@stbno,stbname=@stbname,price=@price,purchasedate=@purchasedate,description=@description,isactive=@isactive where stbno=@stbno", cn);

           cmd.Parameters.AddWithValue("@stbno", stbnumber);

           cmd.Parameters.AddWithValue("@stbname", stbname);

           cmd.Parameters.AddWithValue("@price", price);

           cmd.Parameters.AddWithValue("@purchasedate", purchasedate);

           cmd.Parameters.AddWithValue("@isactive", isactive);

           cmd.Parameters.AddWithValue("@description", description);

           cmd.ExecuteNonQuery();

           MessageBox.Show(isactive.ToString());

           cn.Close();

       }

here @isactive is a checkbox column....