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Sep 20, 2007 at 05:29 PM

One select option depends on another


i have two select options:

SELECT-OPTIONS so_cdr FOR zcmtt_cdr_rutas-cdr.

SELECT-OPTIONS so_ruta FOR zcmtt_cdr_rutas-ruta.

both are related in the table zcmtt_cdr_rutas what do i have to do to make so_ruta depends on the value of so_cdr, i mean if nothing is entered in so_cdr when i select so_ruta gave me all the values, if i select for example so_cdr = 1 then when i select so_ruta only displays me the values for so_cdr = 1 not all the list??