Example of an SNMPSET command Called from an Action

[Mary]

Does anyone have an example of an snmpset called from an Action in Zabbix?

I have the following:

Operation type: Remote command
Target list: <selected host>
Type: Custom script
Execute on: Zabbix server

Commands:

snmpset -o:.1.3.6.1.4.1.3666.1.2.2.1.43.0 -val:1

I have tried many variations, using the name instead of the OID,
snmpset.exe (also the full path where the command snmpset resides)

I just need to reset/update one field.