[Classic] Need Help with Auto-Attack Macro and target-of-target macro for healing!

#showtooltip
/stopmacro [help]
/cast [harm] [@targettarget,harm,nodead] [] Frost Shock
/startattack

But it kind of makes the whole macro pointless. Effectively eliminating the @targettarget condition entirely becoming:

#showtooltip
/cast Frost Shock
/startattack
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