UITableView footerView with button, button doesn't work

Question

I'm trying to create a custom view for my UITableView footerView that has a button in it. I can see it there, but when I touch it, nothing happens... can you see what's wrong here:

- (void)viewDidLoad {     [super viewDidLoad];      if(self.tableView.tableFooterView == nil) {         //allocate the view if it doesn't exist yet         UIView *footerView  = [[UIView alloc] init];          //create the button         UIButton *addNewBtn = [UIButton buttonWithType:UIButtonTypeCustom];              //the button should be as big as a table view cell         [addNewBtn setFrame:CGRectMake(0, 0, 320, [AddMerchantTVC cellHeight])];          //set title, font size and font color         [addNewBtn setTitle:@"Add New" forState:UIControlStateNormal];         [addNewBtn.titleLabel setFont:[UIFont boldSystemFontOfSize:20]];         [addNewBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];         [addNewBtn addTarget:self action:@selector(addNew:) forControlEvents:UIControlEventTouchUpInside];          UIImageView *cellGradient = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"cellGradient.png"]];         cellGradient.frame = CGRectMake(0, 54, 320, 16);         [footerView addSubview:cellGradient];          //add the button to the view         [footerView addSubview:addNewBtn];         footerView.userInteractionEnabled = YES;         self.tableView.tableFooterView = footerView;         self.tableView.tableFooterView.userInteractionEnabled = YES;          [footerView release];         [cellGradient release]; }  - (void)addNew:(id)sender {     // This is never called     NSLog(@"Touched."); }