multiple effects limitation

I made an air unit with 2 engines and I thought I would just put a bone on each engine and hook an effect to each bone.

Nope.

I can't for the life of me get both to display, only one displays, I think the limitation is in that a unit can only have one "moving_forward" effect, that's the type I'm trying to use two of, can anyone confirm that is not allowed?
I found in the hovering air units that an effect of the type "moving" can be on a unit multiple times, the air fabbers have two of those.

What I threw in my json is this:

"fx_offsets": [{
"type": "moving_forward",
"filename": "/pa/units/air/fighter/fighter_jets.pfx",
"bone": "bone_left_engine",
"offset": [0.0,
0.0,
0.0],
"orientation": [0,
0,
0]
}],
"fx_offsets": [{
"type": "moving_forward",
"filename": "/pa/units/air/fighter/fighter_jets.pfx",
"bone": "bone_right_engine",
"offset": [0.0,
0.0,
0.0],
"orientation": [0,
0,
0]
}],

Next I tried copying the effect file with a different name, and using that for the second bone, but then too only one of them displays.
Could anyone please shed some light on the limitations of effects and hooking them up to bones? I thought this would be more straightforward

Bomber_heavy uses multiple moving_forward effects.

Taking a look at what you might be doing wrong.

Okay, I see what you're doing wrong. Do this

"fx_offsets": [{
"type": "moving_forward",
"filename": "/pa/units/air/fighter/fighter_jets.pfx",
"bone": "bone_left_engine",
"offset": [0.0,
0.0,
0.0],
"orientation": [0,
0,
0]
},
{
"type": "moving_forward",
"filename": "/pa/units/air/fighter/fighter_jets.pfx",
"bone": "bone_right_engine",
"offset": [0.0,
0.0,
0.0],
"orientation": [0,
0,
0]
}],

JsonLint is your friend.

The problem is just that you need to give a list to fx_offsets, and what you have done is define the same fx_offsets list, twice (with only a single item). So in this case merging the two items into a single list will work:

Code:

"fx_offsets":  [
   {
      "type": "moving_forward",
      "filename": "/pa/units/air/fighter/fighter_jets.pfx",
      "bone": "bone_left_engine",
      "offset": [0.0, 0.0, 0.0],
      "orientation": [0, 0, 0]
   },
   {
      "type": "moving_forward",
      "filename": "/pa/units/air/fighter/fighter_jets.pfx",
      "bone": "bone_right_engine",
      "offset": [0.0, 0.0, 0.0],
      "orientation": [0,0,0]
   }
],

Thanks @stuart98 @dom314 I'm gonna implement a proper list
I didn't realize it was a formatting thing causing the problem.

@stuart98 @dom314 Thanks again guys this makes placing effect a whole lot easier.
Here's a sneak peek of what I'm working on.

Looking good