How to use /fill with specific block states?

[sharp karma]

/fill ~10 ~10 ~10 ~ ~ ~ prismarine replace air works, but how do i get dark prismarine? /give @s prismarine 1 1 works so the block state is 1 but /fill ~10 ~10 ~10 ~ ~ ~ prismarine 1 replace air is not working?

[narrow stag]

You can only use permutations now

For example
setblock ~ ~ ~ example_block ["state":value]

[past stag]

/fill ~10 ~10 ~10 ~ ~ ~ stone_slab2 ["stone_slab_type_2"="prismarine_dark"] replace air

https://learn.microsoft.com/en-us/minecraft/creator/reference/content/blockreference/examples/intrinsicblockstateslist?view=minecraft-bedrock-stable

[pliant coyote]

what state would i use for the fill replace for custom blocks?

[sharp karma]

Thanks this is exactly what I needed and it worked great

[pliant coyote]

are you using a custom slab block?

[sharp karma]

No sorry, I'm "retexturing" custom structures with vanilla blocks