* event handler for data retrieval
*
SELECT SINGLE cityfrom cityto FROM spfli
  INTO (application->wa1-cityfrom, application->wa1-cityto)
  WHERE carrid =  application->wa2-carrid
  AND   connid =  application->wa2-connid.

SELECT SINGLE url FROM scarr INTO (application->url)
  WHERE carrid = application->wa2-carrid.