New Zealand Law
Have New Zealand Law Questions? Ask a Lawyer Online.
I am not aware of any case where false text messages have been used in evidence, but in principle, this is no different from any forged evidence. If you can demonstrate that these texts could not have been sent by you, and have the expert evidence to back this up, then I see no reason why this shouldn't help your case. If you want to appeal the Family Court order you would need however to explain why that evidence wasnt available in the Family Court hearing.
If you can show this evidence was not available at the Family Court hearing, and that it clearly demonstrates that the other evidence was false then you would be able to get this introduced