We can't assign value to Variant associative array because there is a bug, I found this : http://d.puremagic.com/issues/show_bug.cgi?id=2451 So the issue is already assigned...I'm waiting.
Yes there is a .length for associative array and now aa.length works with the last fix : http://d.puremagic.com/issues/show_bug.cgi?id=3692 Thanks ! GG
