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I know how to create a datapack, but can't manage to find the exact name for the regeneration arrow as a result of a craft. Tried 

"item": "minecraft:tipped_arrow{Potion:"minecraft:regeneration"}",

but didn't work. Thanks for your help!

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  • 1
    I don't think you can nest quotes like that.
    – SF.
    Commented May 27, 2019 at 9:34
  • 1
    Just throw one on the ground and use /data get.
    – Fabian Röling
    Commented May 27, 2019 at 10:16

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There are 3 problems with your current code:

  • minecraft:tipped_arrow does not exist. It should simply be minecraft:arrow with the Potion NBT tag.

  • There has to be a space between minecraft:arrow and the { marking the start of the NBT tags.

  • You can't nest quotes like that in JSON files. It makes the parser think you typed in two strings, minecraft:tipped_arrow{Potion: and } and that minecraft:regeneration is just random text. The easiest way is to simply put ' characters rather than " around minecraft:regeneration (or whatever potion you're using).

In the end, it should look like this:

"item": "minecraft:arrow {Potion:'minecraft:regeneration'}",
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    Escaping nested quotes with \" should work as well. You'll need that if you have more than one.
    – dly
    Commented May 28, 2019 at 7:21
  • Except that "minecraft:tipped_arrow{Potion:"minecraft:regeneration"}" worked in game, not with the datapack...
    – Eli
    Commented May 28, 2019 at 17:22

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