Making a template, but no sound

I’m making a template for my handbell music. I put some notes in it to make sure I did things right. But I get no sound.

I think I have VST instrument set up for a piano sound. However, opening up the Halion panel and clicking on the keyboard I hear nothing.

I checked the Windows Media Player and can hear sound from it.
HandbellTemplate.dorico (627.8 KB)
What did I miss? Or get wrong?