Flash - Add Dynamic Instances Of MovieClips To An Array

I'm trying to add an instance of a MovieClip inside an array. Inside the House Class is a property called HouseObjects. Inside that array, I created a Comp and a Light class. MovieClips are dynamically placed on the stage, via linkage. The MovieClips also act as "toggle buttons." If the button state is ON, value is 1. If the button state if OFF, value is 0.

If the value is 1, I am trying to add MovieClip instance inside the onList Array. Inside that array will be all the instances that have a button state ON.

I created a property called objSelect.

var objSelect:Object;

That variable holds the currentTarget selected. I'm trying to pass it to function trackItems to either push/pop it in the onList array, based on the button status.

I receive an error for this line:
onList.pop(objSelect);
Incorrect number of arguments. Expected no more than 0.
public class House extends MovieClip
{

[Code]...