Hi, not really a issues here but I've seen that the Extreme Hills Edge biome is still in the list but it have been removed ^^'

Ha and also can you tell me how to put multiple option for decoration?
Ex: I want to create cluster of fire so i put this in my config;

Tweaker.setPlacementStage("BIOME_BLOCKS")
clusterDec = newClusterDecoration()
clusterDec.set("count", 2)
clusterDec.set("mainBlock", minecraft:fire)
clusterDec.addSoilBlock("minecraft:grass")
clusterDec.addSoilBlock("minecraft:sand")

but it's not working, I've also tried to create custom dead tree(with another script) like this;

Tweaker.setPlacementStage("POST_ORES")
treeDec = newTreeDecoration()
treeDec.set("count", 2 && "height", 3 && "leafBlock", minecraft:air)

then like this;

Tweaker.setPlacementStage("POST_ORES")
treeDec = newTreeDecoration()
treeDec.set("count", 2, "height", 3, "leafBlock", minecraft:air)

then like this;

Tweaker.setPlacementStage("POST_ORES")
treeDec = newTreeDecoration()
treeDec.set("count", 2)
treeDec.set("height", 3)
treeDec.set("leafBlock", minecraft:air)

but no one worked :/ Also I tried to remove water in ocean and river but it's also not working(see log below)

log;
[06:30:39] [Server thread/ERROR] [SuperScript]: Failed to execute script command: set @ ScriptContext(scriptName=genTree.cfg, lineNumber=4). Reason: No property found for height
[06:30:39] [Server thread/ERROR] [SuperScript]: Failed to execute script command: set @ ScriptContext(scriptName=Wasteland.cfg, lineNumber=9). Reason: No property found for liquidFillerBlock

You need to add the decoration to a biome for it to generate. See the addDecoration command.