At the end of the thread I posted a variant that will run within CNUT as an external tool.
If you examine the second script you'll see where it receives several parameters when CNUT calls it - I use two of them in that script, the IP address (#1) and the admin password (#6). I don't recall offhand which parameter is the SNMP community string, but you can write a different script using that one as a template that utilizes snmpset commands using the IP and community string.
You then check off all the radios you want it applied to, and trigger the ExternalTool in CNUT and it will call the script, passing it the pertinent parameters for each selected radio in sequence.
First I'd trigger it with just one test radio selected, and push all the parameters from the script into a logfile so you can figure out which one is the community string, then you can write the snmpset-based bits that serve your particular purpose, test it against one radio, then run it against any/all.