Embedding parameter not working

Hi, I am trying public sharing function. But the thing is: I don't wanto lock parameteres, I need to pass a default value to filter, but still user can change the filter value.

so I try "Editable Parameter", but when i generate embedding url, the filters will disappear.
so I try not pass any paramter when generate embedding url, and it works! all filters showed!

but then I try pass some value to filter in the URL, like this url https://github.com/abdulxhadi/metabase/blob/master/docs/embedding/signed-embedding-parameters.md says, I try this way:


but nothing happen. the filter is still show without any default value.

anyone knows what's going on?