No wonder I couldn't find it...:o). For example 
<FORM action="../../../admin.cgi/testlist-fantasyfarm.com/privacy/send
+er" method="POST" >
<input type="hidden" name="csrf_token" value="280200000069096e6f5b7347
+000000746573746c6973742d66616e746173796661726d2e636f6d2b61646d696e3a6
+638333163393562386564343865383939386464623764346337663661356161333937
+6135316132">

[download]
and so I modified my program to stick a ':" in front of every field and Just as you said - -I tried it and it program *worked*. 
'user-agent' => 'Mozilla/5.0',
':member_verbosity_threshold' => 0,
':csrf_token' => '28020000006916706f5b7347000000746573746c6973742d6661
+6e746173796661726d2e636f6d2b61646d696e3a63356234316237373565643432393
+036383931306131616635643239653666366463643239373065',
'content-type' => 'application/x-www-form-urlencoded',

[download]
Thanks! I'd have never found that info {since I had no idea what I should be looking for}.

In reply to Re^2: POST fieldnames with underscores by BernieC
in thread POST fieldnames with underscores by BernieC

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