[ns] LossMonitor - can't read, no such variable

[Renata Vidal]

Why I can't set a variable like this: SinkCBR($i) ?
Its got me crazy! If I set each variable like SinkCBR0, SinkCBR1 and
so on, its be OK, but if I try SinkCBR($i) or SinkCBR$i I see the
message "no such variable".
Whats is wrong?

---------- Forwarded message ----------
From: Renata Vidal <[EMAIL PROTECTED]>
Date: Sep 28, 2006 2:47 PM
Subject: LossMonitor - can't read, no such variable
To: ns-users <ns-users@isi.edu>


Hi,

I was trying to use the LossMonitor, but I see the message:
ns: record: can't read "sink(1)": no such variable
    while executing
"$sink(1) set bytes_"
    (procedure "record" line 12)
    invoked from within "record"

This a peace of my code, I don't know whats is wrong:

(..)
set sink($i) [new Agent/LossMonitor]
$ns attach-agent $s($i) $tcp($i)
$ns attach-agent $r($i) $sink($i)
$ns connect $tcp($i) $sink($i)
(..)
proc record {} {
 puts stderr "recording"
 global sink(1) f0
 set ns [Simulator instance]
 set time 0.5
 set bw0 [$sink(1) set bytes_]
 set now [$ns now]
 puts $f0 "$now [expr $bw0]"
 $ns at [expr $now+$time] "record"
}

Any Clue?

--
Renata Vidal
"Triste é o destino de quem tenta vencer as batalhas e ter sucesso nos
ataques sem cultivar o espírito da iniciativa (A Arte da Guerra – SUN
TSU – pg 102)"


-- 
Renata Vidal
"Triste é o destino de quem tenta vencer as batalhas e ter sucesso nos
ataques sem cultivar o espírito da iniciativa (A Arte da Guerra – SUN
TSU – pg 102)"