Hi, is there a way to edit the geometry selection of a Blast node?

I've selected some primitives in the viewport and then deleted with a Blast, but how can I edit the selection after the blast is applied?

I've heard there is a way to do this with the “backitck” key, but I don't have it on my keyboard: is there any other solution?

Use arrow button at right of group parameter.

Thank you it works!