harassment wave

I summon 2 heroes (upgrade base ofc) and that work fine.
But i want to make bot continiously harrasing with this heroes (no other units).
i set agression in profile and strategy to 10 but it didnt help.
i added some harassment wave in initial code- it work good for 1st wave- second hero doesnt want to fight. i dont understand how harrasment wave work. what i supose to code to make them harrasing continiously?