try this 
#tr {*the pattern you want*} {
count = 0
#while (@count < 1800) {
waittime = [@count*1000]
#wait @waittime
#add count 1
}
}
i think it should work fine, provided that the case of @count = 0 doesnt cause zmud to wait for the next buffer.
Emit
edited @ 4:52pm cus i'm an idiot
