AS3 Dynamically naming object properties

Question

I'm working on a sort of Entity Component System in AS3. Within my EntityManager class I have a function called createEntity. It takes in an array of strings that then becomes the entitiy's components.

public function createEntity(newComponents:Array):void
    {
        var newEntity:Entity = new Entity();
        var obj:Object = new Object();
        obj.id = newEntity.id;

        // This is what I would like to do.
        var newComponentName:String;
        for (var i:int = 0; i < newComponents.length; i++)
        {
            newComponentName = newComponents[i];
            obj.newComponentName = createComponent(newComponents[i]);
        }

        trace(obj.Health); // result = undefined

        /* This was my previous setup. This way makes it really hard for my systems to access the components.
        var components:Array = [];
        for (var i:int = 0; i < newComponents.length; i++)
        {
            components.push(createComponent(newComponents[i]));
        }
        obj.components = components;
        */
    }

Furthermore, the systems access the entities by an ID. Within entityManager there is a getEntityByID function. I would like to be able to (from the HealthSystem class) call upon an entity's health component like this: (simplified a bit)

getEntityByID(testID).Health

When using the createEntity function, all of the components have different names, so I would like to name them dynamically. If anyone has any experience with this, help would be appreciated! Thanks!

Answer 1

omg. I love how I spend forever typing out my questions, then the answer hits me seconds after posting it.

var newComponentName:String;
        for (var i:int = 0; i < newComponents.length; i++)
        {
            newComponentName = newComponents[i];
            obj[newComponentName] = createComponent(newComponents[i]);
        }

        trace(obj.Health);

This totally works! Thanks anyways. I would still be happy if anyone has more info on the subject or on Entity Component System architecture in general.