Hey. Hey. Could anyone advise how to write files to multiple datasets according to the number of sets defined by the number of flight tracks? The output dataset should contain the name of the ler route and some other attributes that are not relevant at the moment, however I need the number of datasets to match the number of flight routes ( ar_name attribute ). Currently I can only create one output dataset see attachment "current_dataset_routes_update_test". The attachment contains four flight paths in one dataset, namely Z410, L132, M725 and L602. The required output I would need is 4 x dataset Z410, L132, M725 and L602 see separate attachments with required_dataset + flight route name. I am also attaching a printscreen to give an idea of how to create the actual output dataset. The number of flight paths and the resulting dataset can of course vary, the process must be automated. Thank you very much. M.