What is the different there two functions?

[KrCha]

for( Player : player, FortCharacter : Player.GetFortCharacter ):
FortCharacter.DamagedEvent.Subscribe( HelloEvent )

if( Player : player, FortCharacter : Player.GetFortCharacter ):
FortCharacter.DamagedEvent.Subscribe( HelloEvent )

Also I think For function is used to use like: for( 1 … 3 ): something~~ but above that, it has no number at all.

[im_a_lama (LAMA)]

The first doesn’t exists, it’s a for loop used to iterate over multiple elements (or players), you only tried to provide one here