I have the following JavaScript code which creates a **Case** from an Opportunity, on button click.

    {!REQUIRESCRIPT("/soap/ajax/29.0/connection.js")} 
    var myquery = "SELECT Application_Entitlement_ID__c FROM Account WHERE Id = '{!Opportunity.AccountId}' limit 1";
    
    result = sforce.connection.query(myquery); 
    records = result.getArray("records"); 
    
    if(records[0]){ 
    var relatedAccount = records[0]; 
    try{ 
    var recToCreate = new sforce.SObject("Case");
    
    // select Case Record Type
    var recordTypeQuery = sforce.connection.query("SELECT Name,Id from RecordType where developername = 'WE_Application'");
    var recordTypeQueryResult = recordTypeQuery.getArray("records");
    recToCreate.RecordTypeId = recordTypeQueryResult[0].Id;
    
    // select Queue as owner 
    var queueNameQuery = sforce.connection.query("SELECT Queue.DeveloperName, QueueId from QueueSobject where Queue.DeveloperName = 'Wex_Europe_Customer_Services'");
    var queueNameQueryResult = queueNameQuery.getArray("records");
    recToCreate.OwnerId = queueNameQueryResult[0].QueueId;
    
    recToCreate.AccountId = '{!Opportunity.AccountId}'; 
    recToCreate.Subject = '{!Opportunity.Name}'; 
    recToCreate.Origin = "Customer Application";
    recToCreate.Opportunity__c = '{!Opportunity.Id}';
    recToCreate.User__c = '{!Opportunity.OwnerId}';
    
    // select Entitlement from Account field
    recToCreate.EntitlementId = relatedAccount.Application_Entitlement_ID__c;
    
    var result = sforce.connection.create([recToCreate]); 
    
    if(result[0].success == "true"){
    location.reload();
    }
    else{
    alert("An Error has Occurred. Error:" + result[0].errors.message);
    }
    }
    catch(e){
    alert("An Error has Occurred. Error:" + e);
    }
    
    }

I need to update this code to include an element which assigns the current user to a **Case Team Role** called Requestor.

I've found [this][1] code and tried to combine the two, to create the below. I'm new to JavaScript so (unsurprisingly) it hasn't worked.

    {!REQUIRESCRIPT("/soap/ajax/29.0/connection.js")} 
    
    var myQuery = "SELECT  Application_Entitlement_ID__c  FROM Account WHERE Id = '{!Opportunity.AccountId}' limit 1";
    result = sforce.connection.query(myQuery); 
    records = result.getArray("records"); 
    
    var roleName = "CaseRole",
    var qr = sforce.connection.query("SELECT Id, Name FROM CaseTeamRole where rolename + "Requestor");
    var crRecords = qr.getArray("records");
    var rec = crRecords[0];
    
    if(records[0]){ 
    var relatedAccount = records[0]; 
    try{ 
        var recToCreate = new sforce.SObject("Case");
        
        // select Case Record Type
        var recordTypeQuery = sforce.connection.query("SELECT Name,Id from RecordType where developername = 'WE_Application'");
        var recordTypeQueryResult = recordTypeQuery.getArray("records");
        recToCreate.RecordTypeId = recordTypeQueryResult[0].Id;
    
        // select Queue as owner 
        var queueNameQuery = sforce.connection.query("SELECT Queue.DeveloperName, QueueId from QueueSobject where Queue.DeveloperName = 'Wex_Europe_Customer_Services'");
        var queueNameQueryResult = queueNameQuery.getArray("records");
        recToCreate.OwnerId = queueNameQueryResult[0].QueueId;
     
        recToCreate.AccountId = '{!Opportunity.AccountId}';  
        recToCreate.Subject = '{!Opportunity.Name}';  
        recToCreate.Origin = "Customer Application";
        recToCreate.Opportunity__c = '{!Opportunity.Id}';
        recToCreate.User__c = '{!Opportunity.OwnerId}';
    
        // select Entitlement from Account field
        recToCreate.EntitlementId = relatedAccount.Application_Entitlement_ID__c;
    
        var result = sforce.connection.create([recToCreate]);
    
        // add business requestor to Case Team Role
        var ct = new sforce.SObject("CaseTeamMember");
        ct.MemberId = "{!$User.Id}";
        ct.parentId= result[0].id;
        ct.TeamRoleID =rec.Id;
        alert('Logged In User:'+ct.MemberId);
        alert('Case ID:'+ct.parentId);
        alert('TeamRoleID:'+ct.TeamRoleID);
    
        var result = sforce.connection.create([ct]);
        alert('Successfully Added to Case Team');
    
        // check that Case has been created
        if(result[0].success == "true"){
            location.reload();
        }
        else{
            alert("An Error has Occurred. Error:" + result[0].errors.message);
        }
    }
    catch(e){
        alert("An Error has Occurred. Error:" + e);
    }
    
    }

On button click, the following error message is displayed and I'm not sure what's going wrong here?

>unexpected token var


  [1]: https://developer.salesforce.com/forums/ForumsMain?id=906F00000009PZNIA2