In unity dots ECS 1.0.0 preview .47, How Do I change the Scale in a Non Uniform way using a TransformAspect?

Questions & Answers
1

I am trying to have a system access a entities transform aspect and change just the Y on the scale.

Im having trouble figuring out how to change it. I have seen the scale is a float that changes the size in a uniform way.

the question marks are what i dont know.

    protected override void OnUpdate()
    {
        
        foreach (
            ( TransformAspect transformAspect , RefRW < Branch> branch) 
                in SystemAPI.Query<TransformAspect, RefRW<Branch> >())
        {
            TransformAspect tAps = transformAspect;
            tAps.??? += SystemAPI.Time.DeltaTime * branch.ValueRO.growRate;
      
        }
        
    }
2

https://docs.unity3d.com/Packages/com.unity.entities@1.0/manual/transforms-concepts.html

it mentions the:

The PostTransformScale component

Transform components only support uniform scale. To render nonuniformly scaled geometry, you may use a PostTransformScale (float3x3). This will be applied in the following manner:

LocalToWorld = WorldTransform.ToMatrix() * PostTransformScale

  protected override void OnUpdate()
    {
        
        foreach (
            ( LocalToWorld locToWorld,WorldTransform worldTrans,PostTransformScale postTransScale, RefRW < Branch> branch) 
                in SystemAPI.Query< LocalToWorld,WorldTransform, PostTransformScale, RefRW<Branch> >())
        {
            locToWorld = worldTrans.ToMatrix() * postTransScale;
       


       
        }
        
    }

but i get an error on locToWorld = worldTrans.ToMatrix() * postTransScale;

it says Operator “*” cannot be applied to type float4x4 and PostTransformScale.

So just wondering what else I need to do.