[solved] Why does this portal not form?

I've written a stupid little plugin that creates stupid little portals one block wide instead of two, as a proof of concept. When it creates the portal in the latest dev builds I only get the block at the top. Why?

Code:

  @EventHandler
  public void onPlayerInteract(PlayerInteractEvent event) {
      if (event.getAction() == Action.RIGHT_CLICK_BLOCK) {
          if (event.getPlayer().getItemInHand().getType() == Material.BLAZE_ROD) {
              // Make Stupid Obsidian Gate
              Block block = event.getClickedBlock();
              Block a1 = block.getRelative(0, 0, 1);
              Block a2 = block.getRelative(0, 1, 1);
              Block a3 = block.getRelative(0, 2, 1);
              Block a4 = block.getRelative(0, 3, 1);
              Block a5 = block.getRelative(0, 4, 1);
              Block a6 = block.getRelative(0, 4, 0);
              Block a7 = block.getRelative(0, 4,-1);
              Block a8 = block.getRelative(0, 3,-1);
              Block a9 = block.getRelative(0, 2,-1);
              Block a10 = block.getRelative(0,1,-1);
              Block a11 = block.getRelative(0,0,-1);
              block.setType(Material.OBSIDIAN);
              a1.setType(Material.OBSIDIAN);
              a2.setType(Material.OBSIDIAN);
              a3.setType(Material.OBSIDIAN);
              a4.setType(Material.OBSIDIAN);
              a5.setType(Material.OBSIDIAN);
              a6.setType(Material.OBSIDIAN);
              a7.setType(Material.OBSIDIAN);
              a8.setType(Material.OBSIDIAN);
              a9.setType(Material.OBSIDIAN);
              a10.setType(Material.OBSIDIAN);
              a11.setType(Material.OBSIDIAN);
              // Fill Stupid Obsidian Gate with Portal Blocks
              Block p1 = block.getRelative(0,1,0);
              Block p2 = block.getRelative(0,2,0);
              Block p3 = block.getRelative(0,3,0);
              p1.setType(Material.PORTAL);
              p2.setType(Material.PORTAL);
              p3.setType(Material.PORTAL);
          }
      }
  }

Nobody has any idea?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Bump Again

Sort of solved ...

For the portal blocks I should use the following;

Code:

p1.setTypeId(Material.PORTAL.getId(), false);
              p2.setTypeId(Material.PORTAL.getId(), false);
              p3.setTypeId (Material.PORTAL.getId(), false); 

This works well enough. One caveat; the gate initially looks broken, still, but if you relog you see all of the proper portal blocks.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.