API to check if any promotables are content type URLData?

Version: Windchill 12.1

Use Case: In Promotion Request workflow, check if any of the promotables are WTDocuments with URLData as primary content. If yes, send a notification to a specific group

Description:

In a promotion request workflow, I'm trying to check if any of the promotables are WTDocuments with URLData as primary content and if so, send a notification to a certain group.  The only method I've found to possibly allow me to do this is getURLData, which returns a Vector.  Below is the code I've tried in a Conditional node in the workflow.  Testing by promoting a Document that's content is a URL, it returned result = NO

wt.maturity.PromotionNotice pn = (wt.maturity.PromotionNotice) primaryBusinessObject;
wt.fc.QueryResult queryResult = wt.maturity.MaturityHelper.service.getPromotionSeeds(pn);
boolean isUrl = false;

while (queryResult.hasMoreElements()) {
	Object obj = queryResult.nextElement();
	if (obj instanceof wt.doc.WTDocument){
 	wt.doc.WTDocument doc = (wt.doc.WTDocument)obj;
		wt.content.ContentHolder ch = (wt.content.ContentHolder)wt.content.ContentHelper.service.getContents(doc);
		java.util.Vector urlData = wt.content.ContentHelper.getURLData(ch);
		if (!(urlData.isEmpty())) {
			isUrl = true;
		}
 }
}

if (isUrl==true) {
 result="YES";
}
else {
 result="NO";
}

As a different approach I also tried checking the value of the attribute 2 different ways, but with both of these the workflow doesn't seem to advance beyond the conditional node which houses the code

wt.maturity.PromotionNotice pn = (wt.maturity.PromotionNotice) primaryBusinessObject;
wt.fc.QueryResult queryResult = wt.maturity.MaturityHelper.service.getPromotionSeeds(pn);
boolean isUrl = false;

while (queryResult.hasMoreElements()) {
	Object obj = queryResult.nextElement();
	if (obj instanceof wt.doc.WTDocument){
 	wt.doc.WTDocument doc = (wt.doc.WTDocument)obj;
		string formatName = doc.getFormatName();
		if (formatName == "URL Link") {
			isUrl = true;
		}
 }
}

if (isUrl) {
 result="YES";
}
else {
 result="NO";
}

wt.maturity.PromotionNotice pn = (wt.maturity.PromotionNotice) primaryBusinessObject;
wt.fc.QueryResult queryResult = wt.maturity.MaturityHelper.service.getPromotionSeeds(pn);
boolean isUrl = false;

while (queryResult.hasMoreElements()) {
	Object obj = queryResult.nextElement();
	if (obj instanceof wt.doc.WTDocument){
 	wt.doc.WTDocument doc = (wt.doc.WTDocument)obj;
		PersistableAdapter pa = new PersistableAdapter(doc, null, java.util.Locale.US, new com.ptc.core.meta.common.DisplayOperationIdentifier());
		pa.load("formatName");
		java.lang.String fn = (java.lang.String) pa.get("formatName");
		if (fn=="URL Link") {
			isUrl = true;
		}
 }
}

if (isUrl==true) {
 result="YES";
}
else {
 result="NO";
}

Is this something that's possible or am I totally off the mark?  Anything wrong with my syntax/logic? Any help is appreciated.

p.s. I am not a developer/programmer