Random error causing trigger to break

Okay, so I have this trigger here that just randomly decides to break and I can't figure out why


<triggers>
  <trigger
   enabled="y"
   expand_variables="y"
   group="mobstomove"
   match="You let everyone know that you're ready."
   regexp="y"
   send_to="12"
   sequence="100"
  >
  <send>  if @ppl &lt;= 60 then
Send ("--")
Execute ("tranquil")
Send ("power up")
Send ("power up")
Send ("power up")
Send ("power up")
Send ("sense @target")
 else
  
  if @pki &lt;= 25 then
Send ("--")
Execute ("tranquil")
Send ("Swallow senzu")
Send ("sense @target")
 else

  if @fatigue &gt;= 50 then
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("drink 99.bottle")
Send ("sense @target")
else
Send ("sense @target")
end
end
end</send>
  </trigger>
</triggers>

The error I get is:


Compile error
World: Dragonball Evolution
Immediate execution
[string "Trigger: "]:18: unexpected symbol near '>='

The thing with is it will work nearly 95% of the time even when that line is true, then it will just suddenly throw that error when that line is true or even when it's false. I just don't understand what's going on. It doesn't break all the time, just randomly and I've used the >= sign in other triggers and they all work properly. What am I missing?