The "type" parameter must be one of the following, depending on the type of variable to set on the SNMP host:
i INTEGER
u unsigned INTEGER
t TIMETICKS
a IPADDRESS
o OBJID
s STRING
x HEX STRING
d DECIMAL STRING
If OPAQUE_SPECIAL_TYPES was defined while compiling the SNMP library, the following are also valid:
U unsigned int64
I signed int64
F float
D double