as3 variable as attribute

Hi,
I have a simple php- as3 communication where php returns the attributes live1, live2, live3 etc, in as3 i have

event.target.data.live+i;

where i is a simple counter that i want to use in order to have

event.target.data.live1

.
Instead i am getting undefined1.
I am sure its a syntax error but i can’t figure out what’s the correct one :frowning:

Thanks for your time!