replace selected midi notes help please

Hi,

I'm trying to use the replace_selected_notes to basically delete a midi clip but am unsure of the correct way to achive this.

At the moment this is kind of working for me, where via a button on my controller i'm sending info to select all clips, then replace them with 1 note with 0/1 velocity.

Could anybody inform me as the correct way to achive this?

Thanks in advance :)