You have to learn patience.
Volunteers on this forum have their own work to do and are not just sitting around here waiting to do your work for you.
It is considered rude and poor forum etiquette to keep bumping your thread and making demands of the volunteers.
Try to implement each reg_Ex command in single sql statement by querying dual. The error is occurring during date conversion of null or non date entries. Please correct it and use NVL function to handle null values. I hope it should resolve
I guess you are incorrectly doing a date format there
Check this date:
You are trying to convert it as dd-MM-yyyy (no calander on this universe has 18th month for an year :) so it fails.. correct it and try )