ActionScript 2.0 :: Flash 8 - Using This With Conditional Statements

When use the full path name and the identifier of a movie clip, my conditional statement works fine. However, when I swap the identifier out with "this", it no longer works. This script is contained within the movie clip I am trying to reference. I have found that, "this" works fine by itself on the timeline. It just stops working when I place it within a conditional statement.

Here is my script:
function functionOne() {
randomX = 550*Math.random();
randomY = 400*Math.random();
} functionOneInterval = setInterval(functionOne, 1000);
function functionTwo() {
[Code] .....

The reason I am trying to use "this" instead of the identifier name is because the movie clip it is referencing will be duplicated. This script here generates a random destination point for an enemy spaceship and tells it to constantly move to the changing points. This script is contained within the enemy spaceship movieclip, and I am planning on duplicating several of them at once.