With eval() you can achieve similar results in AS.
//my_var has a string value of “mirza”
my_var = “mirza”;
//allocate a variable variable of the variable my_var
mirza = 1;
//has a value of 1
trace(eval(my_var));
Well, I know that this looks very strange. But I use this method in loops to dynamically create variables like pic1, pic2, pic3.