Get header field value on Form Dynamics 365 Model driven app using JavaScript

You can add maximum 4 fields on header of a entity form in model driven apps. But in JavaScript if you want to get values of any header field of the form you have to use header prefix while reading values. Check the code below and use it according to your business need.

function setStatus(context)
{
	var formContext = context.getFormContext();	
	var casecategory = formContext.getAttribute("new_casecategory").getValue();
	var arrStatus = formContext.getAttribute("statuscode").getOptions();
       var ownerid= formContext.getAttribute("header_ownerid").getValue();

	var Processing = {value : 1, text : "Processing"};
	var ContractNeeded = {value : 2, text : "Contract Needed"};
	var WaitingforDetails = {value : 3, text : "Waiting for Details"};
	var Researching = {value : 4, text : "Researching"};
                    var NSD= {value : 2001, text : "Need Supporting Documents"};
	var PN= {value : 2002, text : "PO Needed"};
	var TBI= {value : 2003, text : "To Be Invoiced"};
                    var New= {value : 2004, text : "New"};
                    var Submitted= {value : 2005, text : "Submitted"};
                    var IP = {value : 2006, text : "In Progress"};


                   // Clear current items
	  for (var i = 0; i < arrStatus.length; i++) {
		formContext.getControl("header_statuscode").removeOption( arrStatus[i].value);
	  }
	  
                  if(casecategory == 747120001) //Accounting
	{
formContext.getControl("header_statuscode").addOption(Processing);
		formContext.getControl("header_statuscode").addOption(ContractNeeded);
                                        formContext.getControl("header_statuscode").addOption(New);
                                       formContext.getControl("header_statuscode").addOption(WaitingforDetails);
                                       formContext.getControl("header_statuscode").addOption(Researching);
                                      formContext.getControl("header_statuscode").addOption(NSD);
                                      formContext.getControl("header_statuscode").addOption(PN);
                                      formContext.getControl("header_statuscode").addOption(TBI);
		
	}
	else
	{
		formContext.getControl("header_statuscode").addOption(IP);
		formContext.getControl("header_statuscode").addOption(Submitted);
                                        formContext.getControl("header_statuscode").addOption(New);
                                       formContext.getControl("header_statuscode").addOption(WaitingforDetails);
	}
}

Hope it helps.

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