Notification trap type problem

Hi.

I have a question about notification (trap) type since I am getting
"Wrong Type (should be INTEGER)".
For example, let's say this is in my MIB:

Object definition:
myTrigger OBJECT-TYPE
    SYNTAX      INTEGER { down1(10), up1(11), down2(20), up2(21) }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION  "Some desc."
    ::= { mySystem 39 }

Trap definition:
myTrap NOTIFICATION-TYPE
   OBJECTS { myTrigger }
   STATUS  current
   DESCRIPTION "Some desc."
   ::= { myTraps 9 }

What I want is to do snmpset of myTrigger as integer, but get a trap as a
string. Inside my agent's myTrigger handler, I take the integer and create
a string, like "Trap triggered by %d.":

snmptrapd[13583]: 2019-12-02 13:39:29 <UNKNOWN> [UDP:
[192.168.0.1]:34138->[192.168.0.2]:162]:#012DISMAN-EVENT-MIB::sysUpTimeInstance
= Timeticks: (884381) 2:27:23.81#011SNMPv2-MIB::snmpTrapOID.0 = OID:
MY-MIB::myTrap#011MY-MIB::myTrigger.0 = Wrong Type (should be INTEGER):
STRING: "Trap triggered by 10."

Is that because myTrap output is string not integer and thus of different
type as myTrigger?

Here is myTrigger handler from the agent:

int myTrigger(netsnmp_mib_handler          *handler,
              netsnmp_handler_registration *reginfo,
              netsnmp_agent_request_info   *reqinfo,
              netsnmp_request_info         *requests)
{
   int  ival = *(requests->requestvb->val.integer); // integer from snmpset
   char msg[64] = {0}; // resulting string

   switch (reqinfo->mode) {
      case MODE_SET_ACTION:
            switch (ival)
            {
               case 10: strncpy(msg, " Trap triggered by 10", 64 - 1);
break;
               case 11: strncpy(msg, " Trap triggered by 11", 64 - 1);
break;
               case 20: strncpy(msg, " Trap triggered by 20", 64 - 1);
break;
               case 21: strncpy(msg, " Trap triggered by 21", 64 - 1);
break;
               default: strncpy(msg, "Unknown port state.", 64 - 1); break;
            }
            sendTrap_myTrap(msg); // this function will wend the trap
         break;
      default:
         break;
   }

   return SNMP_ERR_NOERROR;
}

Thank you very much for your help.

RegK

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