promise example

 the promise


async function getrecord(recordtype,recordid) {
    return new Promise(resolve => {{
            resolve(Xrm.WebApi.retrieveRecord(recordtype, recordid ).then(
                    function success(result)
                    {
                     // perform operations on record retrieval
                        if (result)
                        {
                            return result;
                        }
                    },
                    function (error)
                    {
                        Xrm.Navigation.openAlertDialog(error.message);
                    }
                )
  );
}});




the function that call the promise



async function onChange_regarding(executionContext)
{

    var formContext = executionContext.getFormContext();
    var regarding = formContext.getAttribute("regardingobjectid").getValue();
    
    var mycurrentSubject = formContext.getAttribute("subject").getValue();

    if (regarding != null)
    {
        var entType = regarding[0].entityType;
        if (entType == "incident" && mycurrentSubject == null )
            {      


            var caserecord =  await getrecord("incident", regarding[0].id);     
   var caseSubject= caserecord["_subjectid_value@OData.Community.Display.V1.FormattedValue"];
            var mytitle;
            if (caseSubject != null && caseSubject != "undifined" )
             mytitle = caseSubject +" : "  + caserecord.ticketnumber;
            else
             mytitle = caserecord.ticketnumber;
             
           // alert (mytitle);
            formContext.getAttribute("subject").setValue(mytitle);
            }
    }
}

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