You can easily and quickly figure these things out yourself.
1. trace(1); in console.
2. Call the commands normally
3. trace(0);
4. Find the function calls, or close blockland, open console.log, and ctrl f search "serverCmdCreateMinigame/EndMinigame"
For something simple like this, it's not absolutely necessary to know what each arguments represents, so you can just name them %a,%b,%c, etc, with the same number of arguments as listed by trace