diff --git a/library/PFCP_Templates.ttcn b/library/PFCP_Templates.ttcn
index 4e58f32..3acc287 100644
--- a/library/PFCP_Templates.ttcn
+++ b/library/PFCP_Templates.ttcn
@@ -273,15 +273,34 @@
         choose_id := choose_id
 }
 
+/* Convert plain Network Instance name to encoded (length-byte + "name") format.
+ * Works only for single-label names, i.e. no dots in the name. */
+private function f_netinst_str_to_qname(charstring name) return octetstring
+{
+	var octetstring qname := int2oct(lengthof(name), 1) & char2oct(name);
+	return qname;
+}
+
+function ts_PFCP_Network_Instance(charstring netinst_name) return Network_Instance
+{
+	var Network_Instance netinst := {
+		elementIdentifier := 22,
+		lengthIndicator := 0,
+		pdn_instance := f_netinst_str_to_qname(netinst_name)
+	}
+	return netinst;
+}
+
 template (value) PDI_IE ts_PFCP_PDI(e_PFCP_Src_Iface src_iface,
 				    template (omit) F_TEID local_F_TEID := omit,
-				    template (omit) UE_IP_Address ue_addr_v4 := omit) := {
+				    template (omit) UE_IP_Address ue_addr_v4 := omit,
+				    template (omit) Network_Instance network_instance := omit) := {
         elementIdentifier := 2,
         lengthIndicator := 0,
 	grouped_ie := {
 		source_interface := ts_PFCP_Src_Iface(src_iface),
 		local_F_TEID := local_F_TEID,
-		pdn_instance := omit,
+		pdn_instance := network_instance,
 		ue_ip_address := ue_addr_v4,
 		traffic_endpoint_id := omit,
 		sdf_filter_list := omit,
@@ -355,13 +374,14 @@
 
 template (value) Forwarding_Parameters ts_PFCP_Forwarding_Parameters(
 		e_PFCP_Dest_Iface dest_iface,
-		template (omit) Outer_Header_Creation outer_header_creation := omit
+		template (omit) Outer_Header_Creation outer_header_creation := omit,
+		template (omit) Network_Instance network_instance := omit
 		) := {
         elementIdentifier := 4,
         lengthIndicator := 0,
         grouped_ie := {
 		destination_interface := ts_PFCP_Destination_Interface(dest_iface),
-		pdn_Instance := omit,
+		pdn_Instance := network_instance,
 		redirect_information := omit,
 		outer_header_creation := outer_header_creation,
 		transport_level_marking := omit,