Make player see block

[Computerize]

How would I use this effect and do something like this:

on rightclick:
  if clicked block is set:
    if player's tool is stone sword:
      set {_x} to clicked block's x-coord
      set {_y} to clicked block's y-coord
      set {_z} to clicked block's z-coord
      add 1 to {_y}
      make player see block at {_x} {_y} {_z} as glass

Error:

https://gyazo.com/5be43159910feac2c4f6b5a56cfd6291

 

[PanHack]

on rightclick with stick:
    if clicked block is set:
        set block at location 1 meter forward and 2 meter upwards location of player to glass
    else:
        if clicked block is not set:
            cancel event

here you go !
[doublepost=1580050380,1580042037][/doublepost]Let me know if that does work, if you have any questions ASK and if it's perfect set thread as solved
(PS. try using https://skripthub.net/docs/ this website it includes ADDONS which is useful + you can search)