Reassigning is as easy as declaring variables in ActionScript but in diffrence of without any var keyword and datatype section.
You can reassigne any variables as much times as you want in every line but keep in mind that you have to reassigne a variable that has been declared before.
structure:

Example:

Woshka

Related posts:

1. Declaring variables in ActionScript 3
2. PHP Variables Basic
3. Reassigning Variables in PHP
4. Understanding DataTypes in ActionScript 3
5. Assigning Variables in PHP
6. PHP’s deal with unassigned variables
7. Variables default values in PHP