How do I write this better?

Hi all,

I am trying to understand arrays and functions. I have no prior programming knowledge, but I think I get the gist.

In this instance, I want to create a very basic menu for a building game. The idea is to click on a plot of land (the signpost sprite) which will bring up a building menu, giving one options of what to build on that plot.

I have written a simple code to get that to work, which it does. I have added an array and a function, but to be honest, I think I could have managed without them also..

Can someone please have a look at the attached project; the question is this: How could I have written this better? Is this how (simple) arrays are supposed to be used?

There are some other things in the project, please don't mind them. Everything I want looked at is in the "hud and menu event sheet".

Thanks in advance for anyone taking the time to look this over!

attachment

for some reason it wouldnt open