Resets the console variable to its default value.
Note: The replicate and notify params are only relevant for the original, Dark Messiah, and Episode 1 engines. Newer engines automatically do these things when the convar value is changed.
void ResetConVar(Handle convar, bool replicate, bool notify)
Handle to the convar.
If set to true, the new convar value will be set on all clients. This will only work if the convar has the FCVAR_REPLICATED flag and actually exists on clients.
If set to true, clients will be notified that the convar has changed. This will only work if the convar has the FCVAR_NOTIFY flag.
Invalid or corrupt Handle.