Ahh, the ever challenging TCL syntax... a) Check Frequently Made Mistakes in Tcl http://phaseit.net/claird/comp.lang.tcl/fmm.html
b) try like this: > proc record {} { > puts stderr "recording" > global sink f0 ;# <<<<<<< changed line > 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" > } > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of Renata Vidal > Sent: sexta-feira, 29 de Setembro de 2006 19:54 > To: ns-users > Subject: [ns] LossMonitor - can't read, no such variable > > > 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)"