I am having a Grafana Dashboard with Grafana Viz(TimeSeries), When I select particular value in dropdown, stil its showing all values in Grafana Viz.

Grafana Viz SQL Query:

SELECT DATE, impliedVolatility_OPT AS "-",symbol  FROM <db>.<tl>

Grafana Variable(Drop Down SQL Query):

SELECT DISTINCT CONCAT('- ', symbol) AS symbol FROM <db>.<table_name>;

Snap Attached: