LOV promt search does not return expected results

Hi All,

I tried unsuccessfully to search through the promt LOV by example

https://help.sap.com/viewer/58f583a7643e48cf944cf554eb961f5b/4.2.4/en-US/6b668559f17349f081c943b4230c2409.html

with json

json = {"parameters":{"parameter":[{"id": 20,"answer":{ "info":{"lov":{"query":{"search":"*FOOD*"}}}}}]}}

and url put request

f'http://{conn.str_server}:8080/biprws/raylight/v1/documents/{str_doc_id}/parameters?formattedValues=false'

and get responce:

{"parameters":{"parameter":[
...
{'@optional': 'true',
 '@type': 'sapVariable',
 '@dpId': 'DP0',
 '@primary': 'true',
 'id': 20,
 'technicalName': 'CHAIN1',
 'name': 'Chain',
 'answer': {'@constrained': 'false',
 '@type': 'Text',
 '@keyType': 'Text',
 'info': {'@cardinality': 'Multiple',
 '@keepLastValues': 'true',
 'lov': {'@hierarchical': 'true',
 '@nodeSelection': 'Any',
 '@refreshable': 'true',
 '@searchable': 'true',
 '@mandatorySearch': 'false',
 '@searchScopes': 'Values,Keys',
 '@searchTargets': 'Database',
 'id': 'UNIVERSELOV_DS0.:M:STR:CHAIN1',
 'updated': '1970-01-01T00:00:00.000Z',
 'error': {'error_code': 'WIS 0',
 'message': 'The number of requested members exceeds 5000. Do a search by element instead.'}}}}}
...
]}}

Please tell me what I did wrong