{Actor}.setActorVar(name, value)

USE: 
Use this function to set a float variable to a certain actor. 
The actor can be the Player or any other actor.

This function also allows setting TAGs to actors.

TYPE: Command, Non-Ref (ref-like syntax)
RETURNS: /
THEME: Variables
COMPARE: getActorVar, modifyActorVar

EXAMPLE:
    Player.setActorVar(tag_Player, 1) // Set the Tag 'Player' to the Player's character
    Player.setActorVar(tag_Player, -1) // Remove the Tag 'Player' from the Player's character
    
    MainActor = getPerson(true)
    MainActor.setActorVar(SomeVariable, 42)     // Set the variable to 42
    val = MainActor.getActorVar(SomeVariable)
    "The value of SomeVariable is <val>."