Hi,
I read the following page of Spine User Guide:
Tools - Spine User Guide
Relative values can be entered be starting the number with +, for example +123. Relative negative values must also start with a plus, for example +-123.
I tried it, but I couldn't... :tear:
Do you have any thoughts about what the cause might be?
FYI, I entered like the attached image, and I use Spine 3.8.61.
(Thank you for apply my Japanese translation 😉 )
Thank you in advance.