How do you make a falling block from the block your looking at?

[Cozmicweb]

This is what I have so far:

command /fall:
trigger:
spawn falling iron block 5 meters above and 2 meter horizontally in front of the player

When I change iron block to targeted block I get an error. Can anyone help me?

 

[Shadow501pl]

on right click with stick:
  set {_loc} to block 2 infront of player's eyes
  spawn falling block of iron at {_loc}

 

[Cozmicweb]

on right click with stick:
  set {_loc} to block 2 infront of player's eyes
  spawn falling block of iron at {_loc}

That is not what I meant but I think it could help, thank you.

 

[PatoFrango]

Try this

set {_type} to type of targeted block
spawn falling {_type}...