Make block go to player's targeted block

[MasterHunter2003]

Question: How do I make it so that the block goes to the player's targeted block. Especially, how do I set the speed at which it is pushed. I've tried around with vectors but can't seem to get it to work.

if {frost.meteor.casting.%player%} isn't set:
            set player's targeted block to ice
            set {frost.meteor.location.%player%} to location of player's targeted block
            set {frost.meteor.casting.%player%} to true
        else if {frost.meteor.casting.%player%} is true:
            spawn falling block of ice at {frost.meteor.location.%player%}
            push last spawned entity up with force 1
            set {_from} to vector of {frost.meteor.location.%player%}
            send "%{_from}%"
            set {_to} to vector of location of targeted block
            set {_vector} to {_to} -- {_from}
            send "%{_vector}%"
            send "%{_v1}%"

            #set velocity of last spawned entity to {_vector}
            push last spawned entity direction from {frost.meteor.location.%player%} to player's targeted block at speed {_vector}
            delete {frost.meteor.casting.%player%}
            delete {frost.meteor.location.%player%}