Specify workouts using absolute pace

I’m wanting to set a speed target in cycling. But it fails to upload to wahoo

Using test like

  • DOWN 10 36kph 2.26km 1:42/km -1:33/km Pace

Wahoo upload failed: Athlete i80337 POST https://api.wahooligan.com/v1/plans failed: 422 : {“error”:“Plan validation error: each interval that is not of type ‘repeat’ must have a valid ‘targets’ array”}

I’m pretty sure that Wahoo does accept speed targets as well as power.

Any advice here please?