Something I'm missing about using script files?

[MulleDK19]

Okay, so I have a map that I saved in the custom_stories folder, called "my_first.map". I created a basic HPS file for it ("my_first.HPS"), saved in the same location, but it does not actually do anything.

For reference, this is what my HPS looks like--it's the tutorial one in the wiki:

void OnStart()
{
//Add the Lantern and 10 Tinderboxes when in Debug mode, always good to have light!
if(ScriptDebugOn())
{
GiveItemFromFile("lantern", "lantern.ent");

for(int i=0;i<10;i++) GiveItemFromFile("tinderbox_"+i, "tinderbox.ent");
}
}

////////////////////////////
// Run when entering map
void OnEnter()
{

}

////////////////////////////
// Run when leaving map
void OnLeave()
{

}

It doesn't work, and my dev environment has been properly set up. I'm assuming you need to place a script area--or SOMETHING--in the map to get it to access the script, but I'm at a loss, and the wiki hasn't clarified it for me. I'm sure the answer will be face-palm inducing, but any assistance would be appreciated.

Are you sure you turned on script debugging?