how to search in a dictionary using dashboards query language?

Question

I have the following columns in my data:

time     variable
2021     mydic: {"value1" : 123,
                 "value2" : 234}

As you can see, the column variable contains some sort of dictionary. How can I filter on this using the discover pane in opensearch? I tried the query:

mydic: {value1: 123} 

but this does not work Thanks!