Problem with custom recipes

[Kapten]

Hello ! I'm trying to make recipes using items cith custom lores with TuSKe (https://github.com/Tuke-Nuke/TuSKe/wiki/Recipe-Manager), but that doesn't seem to be working.
Can you help me ?
I'm using the last Spigot version with Skript Bensku dev35b and TuSKe 1.8.2.

Options:
#Copper
    copper_ingot : spawn_egg named "&6Copper Ingot" with lore "&8&oCopper_Ingot"
    copper_sword : iron_sword named "&6Copper Sword" with lore "&8&oCopper_Sword"
    copper_pickaxe : iron_pickaxe named "&6Copper Pickaxe" with lore "&8&oCopper_Pickaxe"

#Steel
    steel_nugget : spawn_egg named "&fSteel Nugget" with lore "&8&oSteel_Nugget"
    steel_ingot : spawn_egg named "&fSteel Ingot" with lore "&8&oSteel_Ingot"

#Autres
    uranium_sword : diamond_sword named "&aUranium Sword" with lore "&8&oUranium_Sword"

On skript load:

# Copper
    register new custom shaped recipe with result {@copper_sword} using spawn_egg with lore "&8&oCopper_Ingot" and stick with shape "a", "a" and "b"
    register new custom shaped recipe with result {@copper_pickaxe} using spawn_egg with lore "&8&oCopper_Ingot" and stick and air with shape "aaa", "cbc" and "cbc"

# Steel
    register new custom furnace recipe with result {@steel_nugget} using iron_ingot
    register new custom shaped recipe with result {@steel_ingot} using spawn_egg with lore "&8&oSteel_Nugget" with shape "aaa", "aaa" and "aaa"

#Autres
    register new custom shaped recipe with result {@uranium_sword} using spawn_egg with lore "&8&oUranium_Ingot" and blaze_rod with shape "a", "a" and "b"