Klaus,
Please note that the arguments array args[] in the action does not show the action name as documented.
Code
<action name="my_test" scope="local">
for(set(i,0), i LT args.length, inc(i),
trace(' arg[', i, ']=', args[get(i)] );
);
</action>
The output of the call
Code
my_test( first, second, third, fourth);
INFO: arg[0]=first
INFO: arg[1]=second
INFO: arg[2]=third
INFO: arg[3]=fourth
Thanks,
Pavel