[ns] problem with Scheduler(please see this code and tell me mistake)

[Amin Irandoost]

hi all
what is problem this code?

set k 0

$ns at 0.2 "set k 4"

$ns at 0.3 "puts \"k=$k\""        print 0 lieu 4 on screen !!!!!!!!!!!!!!!


Thanks in advance

-- 
Amin Irandoost