Nested for loop with null errors

I'm having an issue with a nested for loop generating a null error.

Info:

• 8 text fields named reset#.#
  • reset fields are numbered 1-8, followed by a dot "." then 2, 4, 6, or 8; these are not widget numbers 
  • reset1.2, reset2.2
  • reset3.4, reset4.4
  • reset5.6, reset6.6
  • reset7.8, reset8.8

Here's what I'm getting in the console; it's giving me 8 object fields but 3-4 null returns between each:

for(var i = 1; i < 9; i++) {
	var ary1 = ["2", "4", "6", "8"];
	for(var j = 0; j < ary1.length; j ++) {
		var cReset = getField("reset" + i + "." + ary1[j]);
		console.println(cReset);
	}
}
[object Field]
null
null
null
[object Field]
null
null
null
null
[object Field]
null
null
null
[object Field]
null
null
null
null
[object Field]
null
null
null
[object Field]
null
null
null
null
[object Field]
null
null
null
[object Field]

true

Here's what the code I'm trying to write says in the console; it's saying the field is null when I try and set the mouse up setAction, but the console IS showing 8 object fields. What am I doing wrong and how do I get rid of all the null returns?:

for(var i = 1; i < 9; i++) {
	var ary1 = ["2", "4", "6", "8"];
	for(var j = 0; j < ary1.length; j++) {
		var cReset = this.getField("reset" + i + ary1[j]);
		cReset.setAction("MouseUp", "resetForm([\"card' + i + '\"]);");
	}
}
TypeError: cReset is null
5:Console:Exec
undefined