Board Thread:Support Requests - Getting Technical/@comment-25739558-20160302141929

I have been attempting to use the following code to (hopefully) add a subtitle to pages in a certain namespace. I'm not sure where my error is, but I must be doing something wrong because I have tried similar code in multiple scenarios, with no success.

I have also used other variations, as shown below:

I also checked the main body of the code to ensure it worked, and it did. So, I know that it isn't the problem, as shown below.

Any help is much appreciated! 