Pass 'Select' field values to other fields.

I have a dropdown which displays all my customer addresses. Now I also have a field on my form called RadiusFilter which is basically an address text box. What i want to happend is for the RadiusFilter to be dependent on the SelectFilter (Which contains all the addresses of the customers).

So let's say, I picked address '1' on the Select Filter, address '1' would automatically be inputted on the RadiusFilter textbox.

SelectFilter::make('Customer')
->relationship('customer','cus_address'),
RadiusFilter::make('radius')
->attribute('Customer'),
MapIsFilter::make('map'),

Sorry guys, been trying to find answers on the docs but I can't find anything.
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