Ios – Unwind segue from navigation back button

I'm trying to pass data back to my source view controller by performing an unwind segue. I found an answer for this here:
Unwind segue with Navigation back button

I followed the instructions in the first answer, but the segue is never triggered.

In the source view controller's .h:

- (IBAction)returnJ:(UIStoryboardSegue *)segue;

Here's my source view controller .m:

- (IBAction)returnJ:(UIStoryboardSegue *)segue
{
    NSLog(@"Returned");
    if ([[segue identifier] isEqualToString:@"return Jobs"]) {
        NSLog(@"Retuned");
        resSolarViewController *returnController = [segue sourceViewController];
        if (returnController.jobsList) {
            self.jobs = returnController.jobsList;
            [[self tableView] reloadData];
        }
        [self dismissViewControllerAnimated:YES completion:NULL];
    }
}

I'm pretty sure I have everything hooked up correctly in IB, but the neither of the NSLogs are never shown in the console.

What am I doing wrong?

Thanks.