Setting a Variable to Location Arbitrarily

[ChedRed]

I want to set a variable to a location, but I keep getting an error saying it does not recognize the type.
For example:

{spawns::1} = location(12, 34, 56)

This fails and returns the error `can't understand the value 'location(12, 34, 56)'` and I have no idea why.
Official documentation has not helped either, since none of it seems to have solutions to my issue.
For example, in the docs:

set {home::%uuid of player%} to location of the player

 

[LisooYT]

set {_loc} to location(0,100,0, world "world", 90, 0)

yaw and pitch are optional i think, it could require world tho?

 

[ChedRed]

It gives the error "Can't understand the structure"
I tried with and without the optional params and it gives the same error