This is just my opinion and experiance from felony PAROLE I just finished. Any felony charge does not warrant the use of medical marijuana because the federal gov does not see it as legal. They can keep you from drinking and that is entirely legal. Now this is just my opinion but you should definately put everything on the table with your PO because it is not pretty for them to find out otherwise. If you show them the card and it is OK then by all means proceed but I can tell you from my experiance that the answer was no and after it was brought up the drug test stepped up as well so be very cautious either way. Your PO has the power to keep you from anything that is not FULLY legal by our systems today and if you just got probation and no time be happy and complete it so you can look back on it as a stepping stone in your life and not as a prison statistic. Believe me the cannabis is a huge reliefe for my problem but it definately is NOT worth going to the big house over!