Spawning entity with tags

[Noremac]

Skript's Vertion: 2.5.3-MH
Addons: SkBee
Author: ShaneBee
MC Version: 1.16.4

Full Code:
on rightclick on any stairs:
spawn armor stand at location below event-block
set {_entity} to last spawned entity
set visible of {_entity} to false
make player ride {_entity}
while {_entity} exists:
if player is sneaking:
eject any passenger of {_entity}
wait 2 ticks
delete {_entity}
wait 5 tick

Error: set invisible of {_entity} to false , delete {_entity}

Hello, I had found this in an old post and got it working for the most part. Not having access to skstuff I'm not sure how to edit armor stand's visibility size and float tag's. I plan on changing it to /sit and spawn under player but only after I get it working right. Please if there is tell me of another addon to help change tags or if there is already a way to only use Sk with no addons to change them.

Have you tried searching the docs? No
Have you tried searching the forums? Yes
What other methods have you tried to fix it? Searched around google and tried a few thing myself to no avail.