Please see if the below could give some ideas.
It is similar to what was previously discussed:
Please see workbook v10.3 attached in the Forum Thread.
277807showAll.twbx 1.2 MB
the scenario are different, i find a solution for the other topic via SQL, in this case i need literaly set a default value for the filter, doing this i will be able to get the result that i want. I know that its possible to set a default value to a Workbook that, when its opened, will filter to the last value that was saved before close the project. So what i need is almost the same, i only need that the dashboard filter a determinated value when nothing is sleected. Example: nothing is select, ok, so lets filter to the option 4, or if i want to change, i can change to option 5 or 6, doens't matter, i just need to set a default value (but i'm starting to think that's impossible to do this in tableau). Actually when i select nothing, the tableau SUM all values, have no filter.