Creating manual segue correctly through storyboard and xcode

I'm quite new to xcode, and I am trying to develop a sample app that is basically an embedded tableview which has many levels. I have a plist which stores the cells of each tableview. If the cells do not have children, then I want to be able to go to one detailed view once the cell is pressed. Eventually I want to be able to go to different detailed views depending on data type. To do this, I created a detailed view from storyboard, dragged my view controller to my detailed view to create a manual "Push" segue, and labeled the segue "segue1".

Edit: Source code here

Next I populate what I assumed to be the necessary functions for this to work, which is to call [self performSegueWithIdentifier:@"segue1" sender:myString]; where myString is the title of the cell I selected.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //Check the dictionary to see what cell was clicked
    NSDictionary *dict = [self.tableDataSource objectAtIndex:indexPath.row];
    NSString *myString = [dict objectForKey:@"Title"];
    NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row];

    NSArray *children = [dictionary objectForKey:@"Children"];

    //If there is no children, go to the detailed view
    if([children count] == 0)
    {
        [self performSegueWithIdentifier:@"segue1" sender:myString];

    }
    else{
        //Prepare to tableview.
        DrillDownViewController *rvController = [[DrillDownViewController alloc] initWithNibName:nil bundle:[NSBundle mainBundle]];

        //Increment the Current View
        rvController.CurrentLevel += 1;

        //Set the title;
        rvController.CurrentTitle = [dictionary objectForKey:@"Title"];

        //Push the new table view