Filters on custom view/page but have one visual ignore a particular selection

I have a page:

https://cityobservatory.birmingham.gov.uk/explore/dataset/test-emergency-admissions-for-copd-icp-outcomes-framework-birmingham-and-solihull-wards/insight

Which has 4 filters on that I want t o affect the majority of the visuals. However, for the map I want this to ignore anything made to the 3rd filter “area_name” but respect all other filters. How can I achieve this?

I have tried the following either as its own context or as part of the main one at the start of the page but it just wont listen

<ods-dataset-context context="mapctx"
                     mapctx-dataset="{{ ctx.dataset.datasetid }}"
                     mapctx-parameters="{
                         'refine.date'= ctx.parameters['refine.date'],
                         'refine.time_period_range'= ctx.parameters['refine.time_period_range'],
                         'refine.ethnicity'= ctx.parameters['refine.ethnicity'],
                         'refine.imd':'ALL'
                     }">