How to define a filter selection value based on another filter value defined by a user in Looker Exp

[liviag]

For example, I have defined two dimensions in my view: City and Country. I want that, if there is a filter value selected in Looker Explorer related to the dimension "Country," the options to select in a filter related to the dimension "City" should be only the cities that correspond to the value selected in the filter "Country" before.
In summary, I want a value of a filter selected before to be used to restrict the options to select in the next filter.

How can I implement this behavior in LookerML?