Using this script lava is supposed to be removed from the fuel sources, thus it should no longer heat the Crucible Furnace if the lava is in the Fluid Tank under the Crucible Furnace. However, that does not work. It throws no error, just doesn't work.

The code says this:

@ZenMethod
public static void removeFuel(ILiquidStack fuel) {
MineTweakerAPI.apply(new RemoveFuel(fuel));
}

@joshiejack is "ILiquidStack fuel" connected to the tank with the fuel under the Crucible or is it something different?

You can't remove lava that way because it's add as a string "lava" not as a fluid.

Mhm, this doesn't seem to work either. The string-oredictionary-removal works, though!

yes

So it does not accept "liquid:[liquidname" but rather a "[liquidstringname]" embedded in the code?