hey guys Im having troubles with trying to pull null into a recipe, not sure if its the version im on, but I can't really get this working (i am on 1.16.5)
here is the issue
// add recipe for Nethertie Armor
craftingTable.addShaped("item",item:minecraft:netherite_helmet,[
[item:minecraft:netherite_ingot,item:minecraft:netherite_ingot,item:minecraft:netherite_ingot],
[item:minecraft:netherite_ingot,null,item:minecraft:netherite_ingot],
]);

craftingTable.addShaped("item",item:minecraft:netherite_boots,[
[item:minecraft:netherite_ingot,null,item:minecraft:netherite_ingot],
[item:minecraft:netherite_ingot,null,item:minecraft:netherite_ingot],
]);

craftingTable.addShaped("item",item:minecraft:netherite_leggings[
[item:minecraft:netherite_ingot,item:minecraft:netherite_ingot,item:minecraft:netherite_ingot],
[item:minecraft:netherite_ingot,null,item:minecraft:netherite_ingot],
[item:minecraft:netherite_ingot,null,item:minecraft:netherite_ingot]
]);

craftingTable.addShaped("item",item:minecraft:netherite_chestplate[
[item:minecraft:netherite_ingot,null,item:minecraft:netherite_ingot],
[item:minecraft:netherite_ingot,item:minecraft:netherite_ingot,item:minecraft:netherite_ingot],
[item:minecraft:netherite_ingot,item:minecraft:netherite_ingot,item:minecraft:netherite_ingot]
]);

(I accidentally posted this in the minetweaker github :()

Please follow the issue template.
Also, upload your script to a page like gist.github.com or pastebin and provide a link here.
GH's markdown removes some parts so I can't tell if you just didn't write them or if they are missing in your script.

Also, to answer your question, in 1.14+ use <item:minecraft:air> for empty slots

Please follow the issue template.
Also, upload your script to a page like gist.github.com or pastebin and provide a link here.
GH's markdown removes some parts so I can't tell if you just didn't write them or if they are missing in your script.

Also, to answer your question, in 1.14+ use <item:minecraft:air> for empty slots

Thanks but for some reason only the chestplate works for some reason

Post your updated scripts to pastebin

You put your script on pastebin and send us a link to it

okay, the issue is that you are registering 4 recipes under a single recipe name (in this case "item").

The names need to be different, like:

// add recipe for Nethertie Armor
craftingTable.addShaped("netherite_helmet",<item:minecraft:netherite_helmet>,[
    [<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>],
    [<item:minecraft:netherite_ingot>,<item:minecraft:air>,<item:minecraft:netherite_ingot>],
]);
 
craftingTable.addShaped("netherite_boots",<item:minecraft:netherite_boots>,[
    [<item:minecraft:netherite_ingot>,<item:minecraft:air>,<item:minecraft:netherite_ingot>],
    [<item:minecraft:netherite_ingot>,<item:minecraft:air>,<item:minecraft:netherite_ingot>],
]);
 
craftingTable.addShaped("netherite_leggings",<item:minecraft:netherite_leggings>,[
    [<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>],
    [<item:minecraft:netherite_ingot>,<item:minecraft:air>,<item:minecraft:netherite_ingot>],
    [<item:minecraft:netherite_ingot>,<item:minecraft:air>,<item:minecraft:netherite_ingot>]
]);
 
craftingTable.addShaped("netherite_chestplate",<item:minecraft:netherite_chestplate>,[
    [<item:minecraft:netherite_ingot>,<item:minecraft:air>,<item:minecraft:netherite_ingot>],
    [<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>],
    [<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>,<item:minecraft:netherite_ingot>]
]);