FLEX: question about MXML syntax

I would like to know if it is the same to assign properties to my custom component in its own class, or from the parent document. Please see snippet below:

Here I assign the property bottom in my custom component class:

<?xml version="1.0"?>
<mx:LinkButton bottom="20" >        

    <mx:Script>
...

Here I assign the property bottom when I use the component in my main MX开发者_开发问答ML file

<myComp:Brick bottom="10"/>

Am I overriding the original one ?

Thanks

Yes. The one which you gave in the main MXML will get applied.

You don't override in the sense of oop, but you reassign the value of the property to a new value, yes.