How to change flash size with ac3?

Question

I want to change flash size with xml. Sample config.xml
<genGenis>300</genGenis>
<genYuksek>100</genYuksek>
My flash read xml and change size to 300 * 100
After working in a flash I want to change the default values. Is this possible?

Answer 1

Have you worked with XML before? You're going to need to load that XML file and wait for it to complete. After you do that, are you using layout logic based on these values to create your content? Meaning do you have code in place to realize you have (as you said) 500x200 space so your code is able to use the space available effectively? Or do you just expect the content of the SWF to scale automagically?
As for the loader, you can use a simple URLLoader to load the external XML file. Here's a quick Adobe code snippit and explaination on how to load it:
http://help.adobe.com/en_US/as3/dev/WS5b3ccc516d4fbf351e63e3d118a9b90204-7e6a.html
Once you have the XML in an XML object you can just access the value via the XML variable name you make (e.g. myXML) with the name of the node while getting its text value. In your case you'll need to convert it to a Number because you may want the flexibility of using fractions (e.g. 1.5, 500.25, etc). So you'd need to case the value to a number. So to get the width it'd be like: var myWidth:Number = Number(myXML.genGenis.text()); and same for height just changing the variable and node name as needed.
Now that you have your values you can write layout code to use the numbers and handle the content creation yourself.
If you don't do that, as Andrei1 mentioned you'll need to affect the object embedded directly using ExternalInterface (Flash AS3 talking to the webpages JavaScript) requesting the object be resized to the new size.
You'll want to make sure your stage.scaleMode = StageScaleMode.EXACT_FIT; or stage.scaleMode = StageScaleMode.NO_BORDER; so your SWF content is "stretched" to the size you request. Exact fit will allow the content to distort if necessary to fill the width and height. No border will scale the content to the size specified but will maintain the aspect ratio. It's up to you whichever you want.
If you have any specific questions on any of this just ask.