Slash Notation Doesn't Work on Drumset

I want the circled hit to be in slash notation.

However, attempting to convert it to a slash voice, or re-writing it in a slash voice does one of two things:
1- nothing. 2- converts every bass drum hit into a slash.
Any ideas?

Now, for some reason, Dorico is not playing back any of the bass drum hits. Even after undoing Dorico transforming everything into slash notation.

In the percussion kit that your player has, you’ll need to create a Slash Voice.

I’m not sure how this will affect the playback of the B.D. etc

Hi Gato,
In addition of Daniel suggestion, and after doing that, I managed to assign slashes to your example’s last notes highlighting it singularly and, in the context menu (right click) go to “Percussion/Change Voice…” (and not to “Voices/Rhythmic Slashes…”) and choose the ones that begins with the “thousand” 1001 or 1002 or similar…
I hope this is the right way… but it works.

DanielMuzMurray I didn’t know the procedure was different for percussion. Thanks, will take a look at it later, but as of right now I’m trying to figure out why my bass drum is not playing. The noteheads look normal. I don’t know what I did that broke the playback.