simple variable scope

[eddjc]

Hey all,

Just trying to do something that seems like it should be simple-

<mx:Script>
        <![CDATA[

[Bindable]
private var low:String = application.parameters.low;

/* (left out for debugging)
[Bindable]
private var high:String = application.parameters.high;

*/

ExternalInterface.call("console.log", low);

            ]]>
</mx:Script>

That's just in the base Application element. for some reason, I get the error:

1120:Access of undefined property low

Any ideas why? I've tried removing the [Bindable], changing it to the public variable, getting rid of the word private, everything! Something I'm just not seeing?

Many thanks
Edd

[wvxvw]

<mx:Script/> is the place where you put declarations, you shouldn't execute code there, it's the same as if you did something like this in AS:

package {
...
public class Foo {
...
ExternalInterface.call("console.log", low);
...
public function Foo() {
}}}

[eddjc]

I'm not sure I follow you - although have worked out that the ExternalInterface command doesn't work from within a class definition (not sure why!) I did however manage to get this particular script working - the problem was that until the application os loaded, the parameters aren't available -

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:controls="com.fxcomponents.controls.*" 
    backgroundColor="#444444" themeColor="#628CAF" backgroundGradientAlphas="{[0, 0]}" 
    paddingTop="0"
    paddingLeft="0"
    paddingRight="0"
    paddingBottom="20"
    creationComplete="initVars()">
    <mx:Script>
        <![CDATA[
            
            [Bindable]
            private var appSource:String = "YDA medium.flv";
            
            
            [Bindable]
            private var low:String;
            
            [Bindable]
            private var high:String;
            
            
            function initVars():void {
                
                low = Application.application.parameters.low;
                high = Application.application.parameters.high;
                
                ExternalInterface.call("console.log", high);
                fxVid.source = low;
                
                fxVid.low = low;
                fxVid.high = high;
                
                
            }
            
            ]]>
    </mx:Script>

but then you may be right - that might just work because it's inside a function! So in the MXML file code should be restricted to variable declaration, like an interface?

Many thanks
Edd

[wvxvw]

>> So in the MXML file code should be restricted to variable declaration, like an interface?
Yes, this is close, but not exact.
Try adding -keep optional compiler argument to see what comes out of your MXML files, this would explain it better.

[eddjc]

er... how do I do that from Flex builder?

Many thanks
Edd

[wvxvw]

See the picture:

[eddjc]

ah! Fascinating!

Many thanks
Edd