Great Script, but as stated before there is a bug with the rock cake eating. I had to restart the instance many times with just two overload potions being finished. My bug is exactly what Raphabellon said.
CAUSE: my hp jumps to 2 and the overload expires at the same time or very close to the same time.... in-turn the hp shoots back up to 52 while the task is set on "Eat Rock Cake" and it keeps guzzling until 1hp.