Here's some sample code that just keeps counting beyond 90 where on the previous update it exits as it's told.

Code:

$position = 10

:loop

 servo(d1, $position)

 print("Position: $position")

 Say("$Position")

 sleep(1000)

 $position = $position + 10

 if ($position > 90)
   goto(done)

goto(loop)

:done
Say("I'm Done counting!")