Flow formula with pipe symbol translating as | in debug logs

Question

Have read thru multiple post on this but not getting the results. I have a Flow formula that calculates OK using the flow native debug. However, this flow is called via apex showing the same variable in the debug logs with & #124; instead of the pipe'|' symbol.

Here is the formula: ("UPDT:"& {!fDocCodeOLD} &"|"& {!fDocCode})
Output in native Flow debugger shows:  "UPDT:529|529AR"

Adjusting the formula as: ('UPDT:' & {!fDocCodeOLD} & '\'|\'' & {!fDocCode}),
Update a record calls apex which launches the flow.
Output in the debug logs shows: UPDT:529\'|\'529AR

I am sure the syntax is off but could use some suggestions given this is a flow variable being interpreted via apex.

This is the calling apex....using a flex queue to support the use of callouts for async support.

// from calling class setting the parameteres to pass into the flex queue class.

 String docCodeCSL = "UPDT:"& oldCase.DocCode__c & "|" &  c.DocCode__c;
 as  String docCodeCSL = docCodeCSL.unescapeHtml4();
 Params.put('document_code' , docCodeCSL);

public class CaptivaQueuableCallout implements Queueable, Database.AllowsCallouts
{
    Map<String, Object> params = new Map<String, Object>();
    
    public CaptivaQueuableCallout(Map<String, Object> Params){
         this.params = Params;  
         system.debug('Constructor CDR Flow Params received in flexQueue: '+Params);   
    }
    
    public void execute(QueueableContext context) {  
        system.debug('Execute CDR Flow Params for flow Interview call: '+params); 
        Flow.Interview.Case_CDR_FlowController stage = new Flow.Interview.Case_CDR_FlowController(params);      
        stage.start();  
    }
}

Answer 1

Flows have their output HTML-encoded. Use unescapeHtml4() to get the output you expect.