First of all, you could've contacted the creator of the pack to ask it.
Second of all, i am very curious about your ability to use the line of code when i give it to you.
Third of all:
%obj.mountImage(AHGImage,1);
Good luck with whatever you want to do with it.
Next time, try to find out how an add-on is made and what certain pieces of code do.
And no, i am ot going to guide you step by step to help you code an add-on for Blockland.
I learned everything by reading online documentation and mostly by editing and looking at codes of other add-ons.
(I should sig that... Yes, yes i will do so.)