URGENT!!! Is white ink allowed while filling exam form?

Choco Chip (CHartered accountant) (45 Points)

22 August 2010  

Hey.. i have wrongly written my registration no. is old regn no. whereas it was supposd to be written in new unique regn no. ... can i use  white ink? since i hv made the mistake in Form B which i suppose does not go through scanning or any process.. please reply asap