diff --git a/Designing/WinLib/WinCreate.lua b/Designing/WinLib/WinCreate.lua
index e5e7221..3b64e56 100644
--- a/Designing/WinLib/WinCreate.lua
+++ b/Designing/WinLib/WinCreate.lua
@@ -285,7 +285,7 @@ function WinCreate.AddSashGroup( nParentAreaId, vMeasureTypes, vDimensions, bDay
    end
    
    -- creo gli split di tipo french
-   local vAreas = WinCreate.AddSplits( nParentAreaId, WIN_SPLITORIENTATION.VERTICAL, vMeasureTypes, vDimensions, {}, true, bDayLight, nAreaNbr)
+   local vAreas = WinCreate.AddSplits( nParentAreaId, WIN_SPLITORIENTATION.VERTICAL, vMeasureTypes, vDimensions, {}, true, bDayLight, nil, nAreaNbr)
    -- trasformo le aree risultanti ( che sono null) nelle aree dell'anta settando le info opportune
    for i = 1, #vAreas do
       EgtSetName( vAreas[i], EgtGetName( vAreas[i]) .. '(' .. WIN_SASH .. ')')