you dont need

 { halt } 

you can just do this

 if ($nick isop $chan) {
if ($me isop $chan) { 

because

 if ($me isop $chan) { 

halts because that is what the script is meant to do
and you can maske this into one event using

 On @:Text:*:#:{
if ($strip($1) == Wordhere) {
command parameters here
}
if ($strip($1) == Wordhere) {
command parameters here
}
if ($strip($1) == wordhere) {
command parameters here
}
}

and so on and so forth its alot cleaner and looks nicver and more professional.