help! about array

[kucingkucing]

I test this code work

exec function test1(){
var test : String;
		test = "test1";
		theGame.GetGuiManager().ShowNotification(test);
}

but this code is not

exec function test2(){
var test : array< String >;
		test[0] = "test2";
		theGame.GetGuiManager().ShowNotification(test[0]);
}

what I did wrong?