Sec. 20.00  Criminal liability for conduct of another.
    When  one  person  engages  in  conduct  which constitutes an
offense, another person is criminally  liable  for  such  conduct
when,  acting  with  the  mental  culpability  required  for  the
commission thereof, he solicits, requests, commands,  importunes,
or intentionally aids such person to engage in such conduct.
.

(For verification consult Official Text at Senate Gopher site.)