PLACEHOLDER_INVALID for `Duration/#`

[neuromechanist]

I am trying to get the task duration from the Duration column:

  "duration": {
    "Description": "Duration of the event, set typically to n/a. Instead, the duration of the event is determined by the onset/offset flags or the next event.",
    "Units": "seconds",
    "HED": {
      "duration": "Duration/#"
    }
  }

, but the HED description throws a placeholder error:

Column 'duration':
    hed string: Duration/#
        PLACEHOLDER_INVALID: There should be no # characters in a category sidecar string. Found 1

This seems to be at odds with the Duration and Delay definitions in the specifications

[VisLab]

You have the wrong level for the sidecar --- you are annotating duration as a category column.

The correct annotation is:

 "duration": {
    "Description": "Duration of the event, set typically to n/a....",
    "Units": "seconds",
    "HED": "Duration/#"
 }

[neuromechanist]

Thanks, it makes sense now 🙌🏼