Hi Gknu2013,
You can use the Annotation Text Overrides component to set that property.
I think we found small bug. It requires a change in the text to notice the Wrap Width change. If you are modifying a set of texts add unique character at the end, make a change, then change it back with the desired text width.
Something like this (until RH-90114 gets fixed)
R8-change-AnnotationOverride.gh (13.8 KB)

