What is the test for a jury to find that a person who aids and abets in the commission of a crime has knowledge of the criminal purpose of the crime?

knowledge of the criminal purpose of the perpetrator. (People v. Beeman (1984) 35 Cal.3d 547, 560.) One who aids and abets in the commission of a crime is not only liable for that crime but for probable consequences of the crime originally aided. (People v. Prettyman (1996) 14 Cal.4th 248, 254; People v. McCoy (2001) 25 Cal.4th 1111, 1116-1117.) Given the evidence here, it was reasonable for the jury to find that Valdez took part in the assault against Pettigrew, at least as an aider and abettor, and that the murder was a probable consequence of the assault.