similarity_search for nested fields is not working

[keerthanaleburu]

Hi , I am using an existing open search vector store and trying to perform below queries using langchain and python. But i am unable to see the documents returned.

Queries:
docs = result.similarity_search(
"show me results for rest API throwing 500 exceptions",
vector_field="listOfMessages.vectorEmbeddings",
text_field="listOfMessages.messageContent"
)

Note:

even if i use other search_type or not pass search_type also i am not getting any results.
Here my fields are nested fields.
Someone please help me on how to resolve this issue.