Create new AL1 segments based on specific data in PID 35

[Roundy88]

Hello :)

In PID 35 we may sometimes receive alert flags for a patient (sometimes none, sometimes one, sometimes multiple separated by ~), if these do exist we are looking to create an additional 'AL1' message segment(s) for each alert flag

e.g. alerts AB and CD in the below example we would like to create
AL1|1|AB>
AL1|2|CD>

PID 35 Segment
AB>^20030826^^MC~CD>^20030826^^MC

Been playing around trying to create a Transformer to do so but not having much luck, with the below code the Encoded response is generated like this :-
AL1|
AL1|||DEM>

Any assistance from the experts would be appreciated!

var idx=0;
for each (rsk in msg['PID']['PID.35'])
{
	if (rsk['PID.35.3'].toString().length==0)
	{
		switch (rsk['PID.35.1'].toString())
		{
			case 'AB>':
			
					createSegmentAfter('AL1', msg['PD1']);
					if (idx==0)
					{
						msg['AL1']['AL1.3']['AL1.3.1']=rsk['PID.35.1'].toString();
					}
					else
					{
						msg['AL1'][idx]['AL1.3']['AL1.3.2']=rsk['PID.35.1'].toString();
					}
					idx++;
					break;

			case 'CD>':

					createSegmentAfter('AL1', msg['PD1']);
					if (idx==0)
					{
						msg['AL1']['AL1.3']['AL1.3.1']=rsk['PID.35.1'].toString();
					}
					else
					{
						msg['AL1'][idx]['AL1.3']['AL1.3.2']=rsk['PID.35.1'].toString();
					}
					idx++;
					break;			
		}
		
	}
}

[pacmano1]

Before and after (the expected) message please. Full messages, not a snippet.

e.g. We get this message and need to transform it to this other message.

[Roundy88]

So we get a message in such as the below :-

MSH|^~\&|PAS||MIRTH||20250129131313||ADT^A31|00347915|P|2.3|||AL|NE|
EVN|A31|20250129131200||REGAMEND|BLOJ^BLOGGS JOE^^^^^^^PAS|20250129131200|
PID|1||000999^^^^PAS||PATIENT^Test^^^Mr^^H||20100101000000|M|||||~~||^^^^|S|BAP|||||L|||||||||||||SG>^20030826^^MC~DEM>^20030826^^MC
PD1|||SOME SURGERY^^A12345^^^|B1234567^DUMMY^A^^^DR|
NK1|1|TEST^JULIE^^^MRS|M^MOTHER|123 ANY ROAD^FAKECITY^COUNTY^^AB1  2CD|01345 567890^HOME~||NOK^Next of Kin|19900101
PV1|1|N|

Then if specific values (may send values others than SG> and DEM> but for now we only want those two) are present in PID 35.1 (may be multiple separated by ~) we would like to create additional AL1 message segments after PD1 segment with those values one per segment e.g. :-

MSH|^~\&|PAS||MIRTH||20250129131313||ADT^A31|00347915|P|2.3|||AL|NE|
EVN|A31|20250129131200||REGAMEND|BLOJ^BLOGGS JOE^^^^^^^PAS|20250129131200|
PID|1||000999^^^^PAS||PATIENT^Test^^^Mr^^H||20100101000000|M|||||~~||^^^^|S|BAP|||||L|||||||||||||SG>^20030826^^MC~DEM>^20030826^^MC
PD1|||SOME SURGERY^^A12345^^^|B1234567^DUMMY^A^^^DR|
AL1|1|SG>
AL1|2|DEM>
NK1|1|TEST^JULIE^^^MRS|M^MOTHER|123 ANY ROAD^FAKECITY^COUNTY^^AB1  2CD|01345 567890^HOME~||NOK^Next of Kin|19900101
PV1|1|N|

[pacmano1]

var values = ['SG>', 'DEM>'];

var found_first = false;
var AL
var index = 1

for each(var stuff in msg['PID']['PID.35']) {
    if (values.includes(stuff['PID.35.1'].toString())) {
        if (!found_first) {
            AL = createSegmentAfter('AL1', msg['PD1']);
            found_first = true;
        } else {
            AL = createSegmentAfter('AL1', AL);
        }
        AL['AL1.1'] = index
        AL['AL1.2'] = stuff['PID.35.1'].toString()
        index++
    }
}

[pacmano1]

cleaned up formatting after last post.

[pacmano1]

@Roundy88 mark an answer with the "Mark as answer" butting if it worked for you please.

[Roundy88]

Apologies I was off work after my last message until yesterday so didn't get a chance to test...I have now done so and it works perfectly thank you very much :)