I try to use lookup to specify span option value in bin command with map   | inputlookup mylookupup.csv | fields Index, SearchString ,Tdiv | map [ search index="$Index$" _raw="*$SearchString$*" | bin span="$Tdiv$" _time]   The previous request fails with  :  Error in 'bin' command: The value for option span (Tdiv) is invalid. When span is expressed using a sub-second unit (ds, cs, ms, us), the span value needs to be < 1 second, and 1 second must be evenly divisible by the span value. Example of values in Tdiv field : 15m 1h could you help me with this problem? ... View more