I don't know how to explain this very well but I'd like to make something like a ring with custom name, lore, etc. using Nbt Crafting and use that item to enable flying. That way I can make a recipe with hard-to-get items to make a custom item that grants flight. Is this possible?

i haven't tried nbt crafting but if i understand it correctly you should now be able to

"result": {
    "item": "minecraft:diamond_axe",
    "data": {
      "someCustomNBTValueMagic": 1
    }
  }

and then in fscript something like

~hand:[
 ~nbt~someCustomNBTValueMagic:int:1
]

(after updating fscript to 3.1.4)

Thanks!
I'm using this in "creative_flight.script"

~hand:[
 ~nbt~flightNBT:int:1
]

but console is throwing this error:

[20:33:22] [main/INFO]: tf.ssf.sfort.survivalflight successfully loaded config file
[20:33:22] [main/ERROR]: tf.ssf.sfort.survivalflight failed to load flight script file
java.util.NoSuchElementException
[20:33:22] [main/INFO]: tf.ssf.sfort.survivalflight successfully loaded elytra script file
[20:33:22] [main/INFO]: tf.ssf.sfort.survivalflight successfully loaded elytra boost script file

I can fly without the item. Am I doing something wrong? I didn't touch the settings

edit:
i'm also getting these errors after a second restart (i didn't touch the settings and i can recreate it by deleting the config and restarting the server two times, after the second restart it will throw the following errors)

[20:46:29] [main/WARN]: tf.ssf.sfort.survivalflight #6
java.lang.NumberFormatException: For input string: "null"
[20:46:29] [main/WARN]: tf.ssf.sfort.survivalflight #16
java.lang.NumberFormatException: For input string: "null"
[20:46:29] [main/INFO]: tf.ssf.sfort.survivalflight successfully loaded config file
[20:46:29] [main/ERROR]: tf.ssf.sfort.survivalflight failed to load flight script file
java.util.NoSuchElementException
[20:46:29] [main/ERROR]: tf.ssf.sfort.survivalflight failed to load elytra script file
java.util.NoSuchElementException
[20:46:29] [main/INFO]: tf.ssf.sfort.survivalflight successfully loaded elytra boost script file

i forgot to add ; which is needed in this case

~hand:[
 ~nbt~flightNBT:int:1;
]

I managed to get it working. NbtCrafting was converting the tag into a "byte" value so I changed the script and it works

~hand:[
 ~nbt~flightNBT:byte:1;
]

I can also change the datatype with NbtCrafting so it detects the "integer" but it doesn't really matter.
Thanks!

Question: How do I make it work either on hand or off hand? I've been trying to make it work but I don't understand how to put multiple embed without the console throwing an error.

(
~hand:[
nbtflightNBT:byte:1;
];
~offhand:[
nbtflightNBT:byte:1;
]
)

I swear I tried that! I'm pretty sure my brackets where in the wrong place though.
Now it's working. Thanks for the support I really appreciate it!