Creating a sequence number in the custom field

Hi All,

I want to generate sequence numbers to a custom field. Have used an user property(Sequence Number) to the created custom field.

But the thing is, the sequence number gets generated in the descending order. Eg. If the sequence number of the 1st record is 100, then for the next record, it is 99. The requirement is to generate the same in Ascending order like 100, 101, 102, etc.

So, guide me in creating the sequence number in ascending order.

Regards,

Bala