Does ECE support multiple occurrences of primitive AVPs ?

We are using Ro interface for voice calls. Call is routed through multiple DSCs (diameter signaling controller). Each DSC adds its id as new Route record AVP, creating multiple route record AVP in request we get in diameter gateway. When we send response back (CCA), we need to populate same set of route records in response. Since this is not a grouped AVP, when we use findAVP("Route-Record").getValue() to retrieve the value, it only returns first occurrence of Route-record. Is there any method/way to read multiple occurrences of primitive AVP and write then in response.

ECE Version=12.0.0.4.5 CNE