help! dynamic variables/method question for LoadVars()

genVarObj = new LoadVars();
serverScript ="http://itp.nyu.edu/~tjo230/shoppinglist/inventory2.php";
genVarObj.load(serverScript);
genVarObj.onLoad = function()
{
dynamicVariable = "serverData" + i;
nameofvariable = genVarObj.dynamicVariable;
}

help! how do i make "dynamicVariable" DYNAMIC and call:
"serverData" + 1
of my LoadVars() object
rather than
"dynamicVariable"

Does that make sense?
Any ideas?