Global Variable for AMFPHP

Since I have different kinds of return values from my remoting objects, in order to fully utilize the values, I decide to use Global variables to handle the returned result but....

_global.getName = "";

function getName_result(theResult)
{
_global.getName = theResult;
}

categoryMgr.getName(-1);
trace(_global.getName);


My NetDebugger has detected that I had received the value "ABC" by the method getName. But _global.getName does not contain any variable at last;

What is the problem?

I think that after declaring a variable in the _global scope, you need only call it by name after that

?

Thanks for your response.

No, your suggestion does not work.
Let me show another case so that we can understand this problem more;

_global.getListByParent = new Array();

function getListByParent_result(theResult)
{
_global.getListByParent = new Array();
for (var idx in theResult)
{
_global.getListByParent.push(theResult[idx]);
}

trace("Inside Function Length: " + _global.getListByParent.length);
}

categoryMgr.getListByParent(-1);
trace("Outside Function Length: " + _global.getListByParent.length);

Output:
Inside Function Length: 2
Outside Function Length: 0

Can you recognize the problem? Please advise.