I can't Update Records in sqlite for Iphone programming

-(void)updateData:(NSInteger)ind
{

    sqlite3 *database;

    if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK)
    {   
        NSString *sqlStr = [NSString stringWithFormat:@"UPDATE User SET UserName=?,FullName=?,Email=? WHERE UserId=?;"];
        const char *sql = [sqlStr UTF8String];

        sqlite3_stmt *statement;

        if (sqlite3_prepare_v2(database, sql, -1, &statement, nil) != SQLITE_OK) 
        {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"DatabaseNotAvailable", @"") message:[NSString stringWithUTF8String:sqlite3_errmsg(db)]
                                                           delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
            [alert show];   
            [alert release];
            //NSAssert1(0, @"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database));
        }


        sqlite3_bind_text(statement, 1, [tmpun UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(statement, 2, [tmpfn UTF8String], -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(statement, 3, [tmpem UTF8String], -1, SQLITE_TRANSIENT);

        if(SQLITE_DONE != sqlite3开发者_运维问答_step(statement))
        {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Records" message:@"Record Not inserted" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
            [alert show];
            [alert release];
            alert=nil;
        }
        else 
        {
           UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Records"   message:@"Record Updated" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
            [alert show];
            [alert release];
            alert=nil;
        }

        sqlite3_reset(statement);
        sqlite3_finalize(statement);
    }

  sqlite3_close(database);
}

I am trying to Update my selected record. the statement is executed properly but record is not updated into databse. ind=INdex of selected record. Thanks in advance for your response.