[JW Lua] Changing noteheads in FCPercussionLayoutNotes only works after manual undo/redo

[Jan Angermüller]

Jari,

when changing the notehead symbols in a percussion layout,
I have the problem that the noteheads are changed in the
percussion layout table, but not automatically updated in the score.

Now the strange thing: when I press "Undo" and then "Re-do" after
running the script, the changed noteheads appear in the score.
It seems to me that there is an update function missing internally
in JW Lua that the Finale Re-do function seems to call.

See script below and this youtube screencam video
which demonstrates the behaviour in realtime: http://youtu.be/_Oo4fLq7qiE
In the video I first show how the percussion layout looks before,
then I run the script, then I undo and re-do it. Then the changed x 
noteheads appear.

They also do appear when I open the percussion layout dialog after 
running the script
and click on ok without changing anything. Clicking ok applies the 
selected percussion layout once more.
Simply pressing on CTRL-U or CTRL-D doesn't help.

Any clues what might be wrong here ?

Best regards,
Jan

To run the script, *f**irst select a percussion staff* *with a 
percussion layout attached *(i.e. a staff that is set to "Notation 
Style: Percussion"):

local percstaff=finale.FCStaff()
percstaff:Load(finenv.Region().StartStaff) --load selected percussion staff
if percstaff:IsPercussion() then
     local perclayoutID = percstaff:CalcPercussionLayoutID()
     local perclayout=finale.FCPercussionLayoutNotes()
     perclayout:LoadAllForItem(perclayoutID)
     if perclayout~=nil then
         for layoutnote in each(perclayout) do
             layoutnote:SetClosedNotehead(string.byte("x")) --set all 
closed noteheads to "x"
             layoutnote:Save()
         end
     end
end
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