Scripting Help

Attempting to write a simple AI script for my bard which will allow him play his bard song just before the end of round, whilst attacking his nearest enemy for the rest of it. Unfortunately, my code doesn't seem to behave as expected.

Can someone take a look and tell me what I'm doing wrong?


// Bard song every round

IF
HotKey(A)
Global("attack_n_sing_toggle", "LOCALS", 1)
THEN
RESPONSE #100
SetGlobal("attack_n_sing_toggle", "LOCALS", 0)
END

IF
HotKey(A)
Global("attack_n_sing_toggle", "LOCALS", 0)
THEN
RESPONSE #100
SetGlobal("attack_n_sing_toggle", "LOCALS", 1)

AttackOneRound(NearestEnemyOf(Myself))
Continue()
END

IF
Global("attack_n_sing_toggle", "LOCALS", 1)
THEN
RESPONSE #100
AttackReevaluate(NearestEnemyOf(Myself), 85)
BattleSong()
END