Augmented Reality subtitle label (Please Help!)

[rhystowey]

I am trying to add a subtitle label to the location based augmented reality code:
https://github.com/zac/iphonearkit
(Newer version I used: http://programmingiphonesensors.com/code/ARView.zip)

I have tried copying the method for the first and only label. I positioned it underneath the first label but when testing out the app on iPhone it doesn't show the text for the first label. It just shows a small empty block where the text should go.

(Please see the photo attached to this post below)

Could someone please help me solve this? Many thanks