Zabbix new templates for 3com switches

[moro]

Hello, I'm a new user of Zabbix. I try create new templates for monitoring cpu util in 3com switch.
When I use snmpwalk i got
snmpwalk -v2c -c pass ip 1.3.6.1.4.1.43.45.1.6.1.1.1
SNMPv2-SMI::enterprises.43.45.1.6.1.1.1.2.65536 = Gauge32: 34
SNMPv2-SMI::enterprises.43.45.1.6.1.1.1.3.65536 = Gauge32: 34
SNMPv2-SMI::enterprises.43.45.1.6.1.1.1.4.65536 = Gauge32: 34

I created new tempaltesa and I added new item.
Name: cpu util in 3com
Type: snmpv2 agentkey: 1.3.6.1.4.1.43.45.1.6.1.1.1.2
SNMP OID: 1.3.6.1.4.1.43.45.1.6.1.1.1.2
SNMP community: pass
Port: 161
Type of information: Numeric(float)
Units: %
Update interval 30s

When I add this templates to host I got reply:
Status: Not supported
Info: No Such Instance currently exists at this OID.

Can anyone help me? What I do wrong?

I do it. ... I changed OID and everything works fine.