Modding Help How to make something spawn randomly. (Random Generated?)

Hey, it's me again with another forum post for a mod help. But however, that doesn't matter because that's what this forum is for. Anyways, I'm wondering on how to make your vanity item, let's just say, a blue baseball cap and make it randomly generate if it's possible? Can you supply a code for it too. Thanks! -DarkraiDUD3

 

I think so, but IDK how.

 

Can has example of explanation please?

 

Inside starbound assets:
\assets\treasure\basictreasure.treasurepools

Something like this:

Code:

{
  "__merge" : [],
  "basicTreasure" : [
   [1, { "pool" : [ [0.0003, "baseballhat",1]]  }],
   [2, { "pool" : [ [0.0003, "baseballhat",1]]  }],
   [3, { "pool" : [ [0.0003, "baseballhat",1]]  }]
}

This will add your custom baseball hat to the pool list in basictreasure.treasurepools with around 2% chance of dropping like all those hats.
(Syntax might not be correct but it gives you the general idea)