ok, here's a not so elegant solution:
TicketTime.Timestamp_test = TIME_ADD( AS_TIMESTAMP('01-01-2000 00:00' , 'MM-dd-yy HH:mm'), TicketTime.resource_sch_time_hours )
TicketTime.Duration_test = TIME_ADD( AS_TIMESTAMP('01-01-2000 00:00' , 'MM-dd-yy HH:mm'), TicketTime.resource_sch_time_hours )
TicketTime.Duration_test = TicketTime.Timestamp_test - AS_TIMESTAMP('01-01-2000 00:00' , 'MM-dd-yy HH:mm')
I need a dummy timestamp field to store the result of adding Hrs&Mins to midnight.
Now, I subtract that from midnight to get a duration.
Written as 1 line now:
TicketTime.Duration=TIME_ADD(AS_TIMESTAMP('01-01-2000 00:00','MM-dd-yy HH:mm'),TicketTime.resource_sch_time_hours)-AS_TIMESTAMP('01-01-2000 00:00','MM-dd-yy HH:mm')