Snmpd.conf and own OIDs

[Maxim Galkin]

Guys, please help.
Before us is a challenge, there is a script that rake the value. Furthermore, this value should be placed in any OID or create your own Object Identificator (OID) for example: 1.3.6.h.h.h.h.h. To then get this OID with snmpwalk / snmpget on a remote computer.
read a lot of information, but have not found a concrete example ...

My OS "FreeBSD 9.0-RELEASE , net-snmp 5.7.1_7


Wrote a bash script which gives the value of "integer" "5."
Added to snmpd.conf

exec .1.3.6.1.4.1.1958   / usr / local / bin / bash       / home / user / bin / test.sh

then try to get the value:

snmpwalk-v2c-c public localhost .1.3.6.1.4.1.1958

an error that the OID is not found. what am I doing wrong?
SNMPv2-SMI :: enterprises.1958 = No Such Object available on this agent at this OID