net-snmp TUT:Writing a MIB Module doesn't work - snmp

Question

I just follow the net-snmp tutorial step by step, I really can't get the right result.
here is the link
HERE
I'm facing the same problem, I even didn't pass the tutorial.
here are my details:
my configure command:
./configure --with-default-snmp-version="3" --with-sys-contact="##no.where" --with-sys-location="Unknown" --with-logfile="/var/log/snmpd.log" --with-persistent-directory="/var/net-snmp" --with-mib-modules="nstAgentModuleObject"
after configuration:
part of the ./configure output
checking for and configuring mib modules to use... nstAgentModuleObject default_modules.
nstAgentModuleObject default_modules snmpv3mibs mibII ucd_snmp notification notification-log-mib target agent_mibs agentx dism
and after all:
---------------------------------------------------------
Net-SNMP configuration summary:
---------------------------------------------------------
SNMP Versions Supported: 1 2c 3
Building for: linux
Net-SNMP Version: 5.7.2.1
Network transport support: Callback Unix Alias TCP UDP IPv4Base SocketBase TCPBase UDPIPv4Base UDPBase
SNMPv3 Security Modules: usm
Agent MIB code: nstAgentModuleObject default_modules => snmpv3mibs mibII ucd_snmp notification notification-log-mib target agent_mibs agentx disman/event disman/schedule utilities host
MYSQL Trap Logging: unavailable
Embedded Perl support: enabled
SNMP Perl modules: building -- embeddable
SNMP Python modules: disabled
Crypto support from: internal
Authentication support: MD5 SHA1
Encryption support: DES AES
Local DNSSEC validation: disabled
I used nm to check whether the function has been compiled into the library.
akamai#JNdev:~/Workspace/net-snmp-5.7.2.1/net-snmp-5.7.2.1/agent/.libs$ nm libnetsnmpmibs.so | grep init_nst
00000000000331c0 T init_nstAgentModuleObject