Loot Modifier not changing result item in loot table

[feral osprey]

{
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "name": "minecraft:stone",
          "weight": 1
        }
      ]
    }
  ],
  "functions": [
    {
          "function": "minecraft:sequence",
        "functions": [
                {
                    "function": "minecraft:set_lore",
                    "lore": [
                      {
                        "text": "Line-1",
                        "color": "green",
                        "italic": false,
                        "hoverEvent": {
                          "action": "show_text",
                          "value": "test"
                        }
                      },
                      {
                        "text": "Line-2-A",
                        "color": "green",
                        "italic": false,
                        "hoverEvent": {
                          "action": "show_text",
                          "value": "test"
                        }
                      }
                    ]
                },
                {
                    "function": "debugthings:modify_nbt",
                    "tag": "{\"text\":\"Line-2-B\"}",
                    "target": "display.Lore[1]",
                    "op": "replace"
                }
        ]
    }
  ]
}```
The attached file is the code for the "modify_nbt" loot modifier. However despite going through it several times, I cannot seem to find why the result is always "Line-2-A" instead of "Line-2-B" like it should be, even replace doesn't work and it does no conditionals.

Also this is 1.20.4 if that's needed at all.

Where did my post go.

The attached is my code for a loot modifier, however even though all of this code looks proper and I've gone over it several times now, it doesn't seem to have any effect inside of a loot table,