Damaging area using trigger

[xiaowayne]

I need help understanding damage area...when i did Unit - order (casting unit) damage area in (2) sec of size (300) at (pos of picked unit) for (100) using attack type (spell) and damage type (normal)..

it kills everyone so how can i do to do certain max damage to the unit around the pos of picked unit?

 

[Leopard]

I've never used damage area, coz it will damage friendly unit too. So, i often use pick every units nearby the trigger unit, filter all picked unit with something like 'is enemy? is organic? is structure?' then damage each picked unit using 'Damage unit trigger'

 

[Jimmie13]

Why not crate a dummy unit that just cast a spell like flame strike with no duration so it only has an initial damage.