1 – https://www.legislation.nsw.gov.au/regulations/2015-244.pdf
29.4 A prosecutor must not argue any proposition of fact or law which the prosecutor does not believe on reasonable grounds to be capable of contributing to a finding of guilt and also to carry weight.
In my interpretation of this rule, a prosecutor cannot argue you are factually “liable” unless he can prove factually you are. If he argues without factual evidence that the laws apply, that part of his argument should not be allowed. Ergo, if he can’t argue the laws apply to you then he by default can’t argue you owe him anything.
2 – 
BAR ASSOCIATION OF QUEENSLAND BARRISTERS’ CONDUCT RULES 23 Dec 2011
- A prosecutor must fairly assist the court to arrive at the truth, must seek impartially to have the whole of the relevant evidence placed intelligibly before the court, and must seek to assist the court with adequate submissions of law to enable the law properly to be applied to the facts.