Alignment offset label

Civil 3D
4

I think this would be the way to go. Assuming all of the labels are on the same layer:

  1. Get all of the Labels on the layer using an All Objects On Layer node
  2. Use the Convert to Camber Object node to get the Labels in the right format
  3. Get the Alignment of each Label using AlignmentStationOffsetLabel.Alignment, as shown in your screenshot
  4. Get the names of the Alignments using CivilObject.Name
  5. Put in a string node with the name of the desired Alignment, then check that against the list of Alignments using an == node.
  6. Filter the list of Labels from step 2 with a List.FilterByBoolMask node using the boolean result of step 5 as the mask.