This command will add the specified amount to a specified actor value of your currently selected target. An actor value is a value given to character traits to change their characteristics - e.g. 'Aggression' controls the aggression level on an NPC. See actor value IDs here. This command will not make an actor value go lower than is 'organically possible' - a Whiterun Guard's maximum health level is 252, so you could only restore health for a Whiterun Guard up to 252. Use 'player.restoreav' to change your own values.
restoreactorvalue [actor value id] [amount] Target Command
|Actor Value ID||The ID of the actor value you wish to increase.|
|Amount||The amount to increase the specified actor value by.|
This command is an alias of the RestoreActorValue command. It has the same function, but is shorter (easier to type).
player.restoreav health 5
This command would restore 5 of the "health" value for your character, which is (unsurprisingly) your health level.
player.restoreav stamina 5
The above cheat would restore 5 stamina for your character.
restoreav stamina 5
This command would restore 5 stamina for the NPC you current have selected as a target (you can select a target by clicking on an NPC/object whilst the console is open).