637. Every person who, by his act or omission, aids another person to commit an offence is guilty of the offence as if he had committed it himself if he knew or should have known that his act or omission would probably result in aiding to commit the offence.
Every person who incites or leads another person to commit an offence is guilty of the offence, and of any other offence the other person commits as a result of his encouragement, advice or order, as if he had committed it himself, if he knew or should have known that his encouragement, advice or order would probably result in the commission of the offences.
The fact that no means or plan for committing the offence was proposed or that it was committed otherwise than as proposed does not constitute a defence.