using a trigger to enable a timer

can someone help me make a auto strike trigger ive been trying to make one all day ive tried EnableTimer("strike") but it doesnt seem to work i think its because im not naming my timer right

here is my script so far

<triggers>
<trigger
enabled="y"
expand_variables="y"
keep_evaluating="y"
match="@target *"
regexp="y"
send_to="12"
sequence="100"
>
<send>Send("get moldy sack")
Send("recite moldy @target")
SetVariable ("target", "null")
SetStatus ("Target: null")
EnableTimer ("strike")
</send>
</trigger>
</triggers>

Can you post the timer please?