SetComponent doesn't seem to accept the parameters that seem to match the information

[spark owl]

using Unity.Entities;
using Unity.Mathematics;
using Unity.Transforms;

namespace Systems
{
    public partial class TileSpawnerSystem : SystemBase
    {
        // Update is called once per frame
        protected override void OnUpdate()
        {
            //EntityQuery tileEntityQuery = EntityManager.CreateEntityQuery(typeof(TileTagComponent));

            TileSpawnerComponent tileSpawnerComponent = SystemAPI.GetSingleton<TileSpawnerComponent>();
            EntityCommandBuffer entityCommandBuffer = SystemAPI
                .GetSingleton<BeginSimulationEntityCommandBufferSystem.Singleton>()
                .CreateCommandBuffer(World.Unmanaged);

            for (int i = 0; i < 500; i++)
            {
                Entity spawnedTile = entityCommandBuffer.Instantiate(tileSpawnerComponent.tilePrefab);
                entityCommandBuffer.SetComponent(spawnedTile, new TransformAspect()
                {
                    LocalPosition = new float3(i, i, i)
                });
            }
        }
    }
}```

When I look at this the entityCommandBuffer.SetComponent shows an error that 'the constraints for type arguments not satisfied'

Anyone have any explanation? I am new to Dots, but I just don't understand this. tileSpawnerComponent.tilePrefab, is also an Entity. 

I know the code doesn't make sense, I'm just trying to get it functioning first, then I intend to go in and change what it's actually doing.

[granite lintel]

you can't use Aspects like that, SetComponent and the other functions like that only take in IComponentData (or ICleanupComponentData)

if you are wanting to set the position do

 new LocalTransform()
 {
      Value = new float3(i, i, i)
 }

[spark owl]

Oh my god, thank you, I've been trying different things for an hour now and I could not figure it out