Enemy Spawning Macro

I'm currently attempting to create a slime boss and I wish to give it the ability to spawn weak minions. However I can not figure out how to do so and I'm failing to find something on it on the Roll20 Wiki. Can anyone give me some advice on this? 

With the API (A Pro Subscriber Perk), you can use a script called King's Summon Script to create the tokens easily. With a free account, you're pretty much limited to dragging them in from the Journal. The best you could hope for would be a macro that whispers you how many to summon.  Assuming it summoned 3d4 of them on a 5 or 6 on a 1d6, you could write something like: /w gm Greater Slime Boss summons [[ [[1d6>5]]*[[3d4]]]] Slime Minions.

Thank you sir. I'll keep this in mind.