Resize method with Javascript in Illustrator CS4

Question

var objectBounds = docRef.visibleBounds;
var W = objectBounds[2] - objectBounds[0]; //figures the width
var H = objectBounds[1] - objectBounds[3]; //figures the height
// W & H are reporting the size in points ... convert to picas
var picaW = W / 12;
var picaH = H / 12;
// do the math for the correct column width: settings / width = percentage in decimal; multiply by 100 to get the decimal place in the right spot.
var endWidth
var percentageX = Math.round((endWidth / picaW) * 100);
var percentageY = percentageX;
for (var a=0; a<docRef.layers.length; a++){
     var layerRef = docRef.layers[a];
     layerRef.hasSelectedArtwork=true;   // select all
     // now to resize based on the percentage
     layerRef.pageItem.resize(percentageX, percentageY);
The width and height are coming out fine. But in this last line, that resize is just not working. When I run it I get an error that says: undefined is not an object.
The syntax must be wrong ... any ideas?
Thanks in advance!

Answer 1

Great. Grouping was exactly what I needed to do. This works perfectly now (unless there are a few clipping masks already in the image, then it gets a little weird). Here's what I ended up with:
var objectBounds = docRef.visibleBounds;
var W = objectBounds[2] - objectBounds[0];    // figures the width
var H = objectBounds[1] - objectBounds[3];     // figures the height
// W & H are reporting the size in points ... convert to picas
var picaW = W / 12;
var picaH = H / 12;
// do the math for the correct column width: settings / width = percentage in decimal; multiply by 100 to get the decimal place in the right spot.
var endWidth = 20;
var percentageX = Math.round((endWidth / picaW) * 100);
var percentageY = percentageX;
// creates group on a new layer and omits guides
var theLayer = docRef.layers.add();
theLayer.move(docRef, ElementPlacement.PLACEATBEGINNING );
var theGroup = docRef.groupItems.add();
theGroup.name = "theGroup";
theGroup.move(theLayer, ElementPlacement.PLACEATBEGINNING );
for (var b = docRef.layers.length - 1; b > 0; b--) {
if (docRef.layers[b].visible == true) {
docRef.layers[b].locked = false;
// move the items into the group if they are not guides;
for (var a = docRef.layers[b].pageItems.length - 1; a >= 0; a--) {
if (docRef.layers[b].pageItems[a].guides != true) {
docRef.layers[b].pageItems[a].locked = false;
docRef.layers[b].pageItems[a].move(theGroup, ElementPlacement.PLACEATBEGINNING)
// now to resize based on the percentage
for (var s=0; s<docRef.groupItems.length; s++){
     docRef.groupItems[s].resize(percentageX, percentageY);
var newPicaW = (objectBounds[2] - objectBounds[0]) / 12;
var newPicaH = (objectBounds[1] - objectBounds[3])/ 12;