Unable to view the newly added fields in Visualization

I fetched the data from the database using logstash.

Further I added a new field in the filter .

add_field => { "failure_reason_new" => "%{failure_reason}"}
}

However, I am unable to view the newly added field "failure_reason_new" in the available fields under the Visualization.

Hi there, you might need to refresh the field list for your Index Pattern, under Management > Index Patterns.