Trying to get a place feature to happen from jigsaw block

So basically im tring to have my structure extend its pillar to the first solid block hit.
So far I have the following setup:
template_pool/fortress/pillar.json
{
    "name": "betterstructures:fortress/pillar",
    "fallback": "betterstructures:fortress/pillar",
    "elements": [
      {
        "weight": 1,
        "element": {
          "element_type": "minecraft:feature_pool_element",
          "feature": "betterstructures:fortress/pillar",
          "projection": "rigid"
        }
      }
    ]
  }
placed_feature/fortress/pillar:
{
    "feature": "betterstructures:fortress/pillar",
    "placement": []
  }
configgured_feature/fortress/pillar:
{
    "type": "minecraft:block_column",
    "config": {
      "direction": "down",
      "allowed_placement": {
        "type": "minecraft:matching_blocks",
        "blocks": ["minecraft:air"]
      },
      "prioritize_tip": false,
      "layers": [
        {
          "height": 64,
          "provider": {
            "type": "minecraft:weighted_state_provider",
            "entries": [
              { "weight": 10, "data": { "Name": "minecraft:blackstone" } }
            ]
          }
        }
      ]
    }
  }
I included screenshots to show the jigsaw setup.
Also running /place feature betterstructures:fortress/pillar in game does function properly although it does stop 1 block before hitting the floor for some reason.
I hope this is clear, some help would really be appreciated.