Wildcard search from lookup

Hi, Is there any way to get all the values in the column from the lookup table to build the default choice option in the drop-down? I want to remove the hard-coded list of hosts in the default and populate it from the look up. I don't want to use static option with **All=*** as it may pull other host names when I will add the records in the lookup for other environment/location values. Can some one advise, please?VM Hosthost= OR host=| inputlookup gw_host.csv | search environment=stage | dedup hostname | fields hostname-15mnowhosthostnameh101,h102,h103 File: gw_host.csv location,environment,hostname 1,stage,h101 2,stage,h102 3,stage,h103 Thanks, AJ.