what are the correct treatment of lease in accordance with the revised IAS

This will depend on whether it is a Finance lease or operating lease. Operating leases are generally recorded as an expense for the duration of the lease. A finance lease is partly capitalised and partly expensed, at discounted rates.

the treatment of lease depend upon the nature of the lease that either financial lease, facility lease ,equipment lease ... and it will be treated according to the lease agreement based on the type of lease and treated up on the rules and regulation