Since the immigration law that governs dual citizenship was signed in 2006, it automatically applies only to anyone born after the law took effect. Those born before 2006 had until 2010 to register and apply for dual Indonesian citizenship. Assuming you didn't apply for it back then, you are considered a citizen of NZ only. The new 2011 law grants permanent residence to former Indonesian citizens, since technically you have never been one, you are not eligible for it. Sorry.