# Cannot convert MethodHandle(List,int)int to (Object,String)String **URL:** \ **Category:** Elasticsearch\ **Created:** [June 4, 2018, 2:28pm UTC](https://discuss.elastic.co/t/cannot-convert-methodhandle-list-int-int-to-object-string-string/134439 "2018-06-04T14:28:49Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![psu](https://avatars.discourse-cdn.com/v4/letter/p/cc9497/32.png) [@psu](https://discuss.elastic.co/u/psu)\ **Post date:** [June 4, 2018, 2:28pm UTC](https://discuss.elastic.co/t/cannot-convert-methodhandle-list-int-int-to-object-string-string/134439/1 "2018-06-04T14:28:50Z")
I'm using \_update\_by\_query with script which contains many if's like this: ``` ArrayList tmp=[]; if(ctx._source.anketa["REGION"]==3){tmp.add(2);} if(ctx._source.anketa["REGION"]==4){tmp.add(5);} if(ctx._source.anketa["REGION"]==5){tmp.add(3);} if(ctx._source.anketa["REGION"]==6){tmp.add(7);} ... ctx._source.anketa["anotherfield"] = tmp; ``` At some point I get exception: array ( 'type' =\> 'wrong\_method\_type\_exception', 'reason' =\> 'cannot convert MethodHandle(List,int)int to (Object,String)String', ), 'script\_stack' =\> array ( 0 =\> 'if(ctx.\_source.anketa["REGION"]==1){', 1 =\> '.......................^---- HERE', ), How can I debug which document causes this? I need some instanceof verification I think, but I have very little Java knowledge. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 2, 2018, 2:29pm UTC](https://discuss.elastic.co/t/cannot-convert-methodhandle-list-int-int-to-object-string-string/134439/2 "2018-07-02T14:29:05Z")
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