Importing Flat file dynamically using %MACRO and dataset values SAS -

i have folder various flat files. there new files added every month , need import raw data using automated job. have managed except final little piece.

here's logic: 1) scan folder , file names fit description 2) store these file names , routes in dataset 3) macro has been created check whether file has been imported already. if has, nothing happen. if has not yet been imported, imported.

the final part need right, need loop through records in dataset created in step 2 , execute macro step 3 against file names.

what best way this?

look call execute executing macro data step.