elasticsearch - query_string filter inside a nested filter throws an error -

in example i've placed full query example that's been paired down non-working portion has me stuck.

basically have document has nested document type under datailitems , trying query_string filter against field in nested document fails. take same portion , run against non-nested field , works. i'm doing wrong.

the error receive nested: queryparsingexception[[******] [_na] filter malformed, must start start_object]

so, proper way this?

some caveats. "and"s used further filter requirements contain bools, ranges, etc... have stripped out additional reqs example.

{     "size" : 1,     "query" : {         "filtered" : {             "filter" : {                 "and" : [{                         "nested" : {                             "path" : "detailitems",                             "filter" : {                                 "and" : [{                                         "query" : {                                             "query_string" : {                                                 "detailitems.name" : {                                                     "query" : "mastersettings",                                                     "minimum_should_match" : 1                                                 }                                             }                                         }                                     }                                 ]                             }                         }                     }                 ]             }         }     } } 

the query_string in op not syntactically correct, below example of how query string re-written:

  "size" : 1,     "query" : {         "filtered" : {             "filter" : {                 "and" : [{                         "nested" : {                             "path" : "detailitems",                             "filter" : {                                 "and" : [{                                         "query" : {                                             "query_string" : {                                                 "fields": [                                                    "detailitems.name"                                                  ],                                                  "query" : "mastersettings",                                                 "minimum_should_match" : 1                                              }                                         }                                     }                                 ]                             }                         }                     }                 ]             }         }     }