Attempting to add Wood material to existing blocks to fix crash issue | latcord | Page 1

one of the mods I'm playing with, the signs don't have a material assigned and crash your game if you place them down. I'm attempting to fix this with kubejs.
I've tried both:

BlockEvents.modification(event => {
    event.modify('eternal_starlight:lunar_sign', block => {
        block.material = Wood
    }) 
})

and

BlockEvents.modification(event => {
    event.modify('eternal_starlight:lunar_sign', block => {
        block.material = 'Wood'
    }) 
})

the first gave the error StartupEvents.js#18: Error in 'BlockEvents.modification': dev.latvian.mods.rhino.EcmaError: ReferenceError: "Wood" is not defined.

the second gave the error StartupEvents.js#18: Error in 'BlockEvents.modification': dev.latvian.mods.rhino.EvaluatorException: Java class "dev.latvian.mods.kubejs.block.BlockModificationKubeEvent$BlockModifications" has no public instance field or method named "material".

I just want to add the generic wood material to the signs but I can't find the documentation I need on the wiki, what do I need to do differently?

#Attempting to add Wood material to existing blocks to fix crash issue