filter on swap list

mayby some one write about this but I not found this forum.

how can I look ONLY on "silver coins" from collectors swap list.

few time ago it's working on:
"Remowe filter <red heart> coins"
"Hide X coins"
"Show only <green ball> coins"
Show omly <red heart> or <green ball> coins"

but now not working.

I add to my wishes and not wish different metal.

If someone can help me....
regards all