I'm trying to use async evapi with app_python3 KEMI, but I don't know how to get t_suspend variables. 

What am I doing is connecting to evapi via telnet and making a call, which successfully reaches that point:

        if KSR.evapi.async_relay(str(KSR.pv.get("$T(id_label)"))):

            KSR.xlog.xinfo("processing suspended in transaction [" + str(KSR.pv.get("$T(id_index)")) + ":" + str(KSR.pv.get("$T(id_label)")) +"]\n");

I have the id_label in the log, but in telnet I have None. 

How can I get transaction index and label transferred using python3 KEMI? 

Shall I use KSR.x.modf (in that case I'm losing almost all KEMI benefits)?..