Creating Expression Maps in Dorico Pro 5, using SSO (Spitfire Symphonic Orchestra)

I have just commenced the - what will undoubtedly be - arduous task of creating my first set of Expression Maps for Dorico/SSO.

I found this video extremely helpul: https://youtu.be/3jrsZYLresE?si=IuuPS0yWNSY32jc2

However, whilst I have been able to create the first 2 KS for the strings - arco & pizz - when I press playback, the arco continues along with the notes which have the Pizz. assigned to them.

I would be most grateful if someone could let me know what I have apparently done wrong in my set up stage. 'Tis strange as when I click on the notes with the mouse, I get the correct KS, but when I press playback, I get the overlapping of KS playing together.

Once someone has explained this to me, & I have then rectified it, I will complete the Expression Map for Strings & then share it. I will do this for each Expression map I create. Thanks :slight_smile:

I have since figured this issue out. I had the polyphonic KS toggled on. I turned it off & voila! Plays only the desired keyswtiches when prompted.