Having asserted this defense, the burden rests upon the Defendant to prove it by the greater weight of the evidence. Evidence is of greater weight if, when considered and compared with opposing evidence, it is more persuasive and convinces you that what the Defendant seeks to prove is more likely so than not so. It is immaterial who produced the persuasive evidence.
Accordingly, although the State may have proved beyond a reasonable doubt all of the essential elements of the offense charged, the Defendant cannot be found guilty if the Defendant has proved this affirmative defense by the greater weight of the evidence. In that event, you must find the Defendant not guilty.