Trap destinaton problem

I am using net-snmp ver5.7.1 and config snmpd as a master agent and using my app as a sub agent.
I am working on ARM linux and compile net-snmp on version 2.
on snmpd.conf file I added "trapsink  192.168.0.5"
it means I want to send traps to 192.168.0.5.
when I run snmpd and then my subagent it works and I can send traps on sub agent to 192.168.0.5
and manager will receieve all traps.

in that case I can read by MG-soft these tables:




snmpTargetAddrTable:

Instance  ----------->internal0     
snmpTargetAddrName(IDX, IMP) ----------->Not accessible
snmpTargetAddrTDomain ----------->snmpUDPDomain
snmpTargetAddrTAddress -----------> C0.A8.00.05.00.A2 (hex)
snmpTargetAddrTimeout----------->0
snmpTargetAddrRetryCount----------->0 
snmpTargetAddrTagList ----------->internal0 
snmpTargetAddrParams ----------->internal0
snmpTargetAddrStorageType----------->readOnly(5)
snmpTargetAddrRowStatus -----------> active(1)  


snmpTargetParamsTable:

Instance -----------> internal0
snmpTargetParamsName(IDX, IMP)----------->Not accessible
snmpTargetParamsMPModel----------->0
snmpTargetParamsSecurityModel----------->1
snmpTargetParamsSecurityName----------->public
snmpTargetParamsSecurityLevel----------->noAuthNoPriv(1)
snmpTargetParamsStorageType----------->readOnly(5)
snmpTargetParamsRowStatus----------->active(1)


snmpNotifyTable:

Instance -----------> internal0
snmpNotifyName(IDX, IMP) ----------->Not accessible 
snmpNotifyTag ----------->internal0
snmpNotifyType ----------->trap(1)
snmpNotifyStorageType ----------->readOnly(5)
snmpNotifyRowStatus ----------->active(1)

when I want to change destination address of traps remotly without restarting snmpd ,I have some problems.
one problem is, I can not remove row from snmpTargetParamsTable and snmpTargetAddrTable
when I removed snmpNotifyTable row by snmpNotifyRowStatus ----------->destroy(6),I can not received any traps.(as I expected). but when i want to add that row again I have some problem:
my sequense is:

1 -snmpNotifyRowStatus ----------->(5)
2-
Instance -----------> internal0
snmpNotifyName(IDX, IMP) ----------->Not accessible 
snmpNotifyTag ----------->internal0
snmpNotifyType ----------->trap(1)
snmpNotifyStorageType ----------->readOnly(5)

I can not write snmpNotifyStorageType >readOnly(5) 
but I can write snmpNotifyStorageType >other(1) 


3_
snmpNotifyRowStatus ----------->active(1)

in that case still I can not receive any traps.
for adding new destination address I added rows like that with replacing "internal0 to ext0" and "C0.A8.00.05.00.A2 (hex) to C0.A8.00.06.00.A2 (hex)".
(192.168.0.6)but nothing happend again.

I am really confused what should I do,I have read lots of docs ,
is there any thing wrong in my steps.
I would be grateful if someone could help me.

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