[ns] plzz help me with soln for invalid command name "Agent/myUDP"

[subhasis choudhury]

Hi,
I am using the smallko method to evaluate multimedia traffic and followed each step...but when I run the tcl script be.tcl the following error is coming..

invalid command name "Agent/myUDP"
    while executing
"Agent/myUDP create _o82 "
    invoked from within
"catch "$className create $o $args" msg"
    invoked from within
"if [catch "$className create $o $args" msg] {
if [string match "__FAILED_SHADOW_OBJECT_" $msg] {
delete $o
return ""
}
global errorInfo
error "class $..."
    (procedure "new" line 3)
    invoked from within
"new Agent/myUDP"
    invoked from within
"set udp1 [new Agent/myUDP]"
    (file "be.tcl" line 24)

does anyone has a solution to this problem..Any sort of help will be appreciated

Thanks & Regards
Subhasis