align dynamics with f12 in win10

In earlier versions of dorico I was able to highlight hairpins and align them with f12. the key command for this is still f12 but it does not align the hairpin. what am I doing wrong?

It must be assigned to something else. Have you tried checking it in Key Commands?

Make sure you’re in Engrave mode, Burton: the Align Dynamics command only works in Engrave mode.

do remember that it worked in engrave mode and at the time it didn’t seem to work. long hours of work and frustration makes things blury, but it is working now. thanks, again. I have gotten to the point that I would not know what to do without dorico 3.1.