Seems nothing wrong with the perl code... Can you give some more info about snmx?
I've never heard of it, and google wasn't verry communicative:
Simple Network Management Executive. SNMX is an executable program and scripting language providing network management functions using SNMP protocol. The SNMX program has application in system administration of networks, network process control, data logging, and interprocess/internetwork communication. It is Freely Distributed to individuals and organizations (with some limitations applying.)
, but i still would not know how the program is called, or how snmx works.
*** Update ***
One thing (little issue in your code), a return value is given from a sub, so in this case you should write: (Have you tried to use STDOUT?) 
use Win32;

sub message() {
    $caption = "asg report";
    $val = Win32::MsgBox("data for 22nd not found.\n Do u want to cont
+inue?", 4, $caption);
    return ($val);
}
print message();

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In reply to Re: Passing parameters from perl to snmx by jbrugger
in thread Passing parameters from perl to snmx by Nalina

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