diff --git a/Designing/Main.lua b/Designing/Main.lua
index 40d21d6..ecba1cc 100644
--- a/Designing/Main.lua
+++ b/Designing/Main.lua
@@ -67,7 +67,7 @@ local nFrameId = WinCreate.CreateFrame( WIN_FRAME_TYPES.RECT, vFrameJoints, {Win
 -- local nFrameId = WinCreate.CreateFrame( WIN_FRAME_TYPES.CHAMFER, { FrameJointType, FrameJointType, FrameJointType, FrameJointType, FrameJointType}, {WindowWidth, WindowHeight, WindowHeight + 500})
 -- local nFrameId = WinCreate.CreateFrame( WIN_FRAME_TYPES.POINTED_ARC, { FrameJointType, FrameJointType, FrameJointType, FrameJointType, FrameJointType}, {1500, 1500, 2400})
 -- local nFrameId = WinCreate.CreateFrame( WIN_FRAME_TYPES.TRG, { FrameJointType, FrameJointType, FrameJointType}, {1500, 1500, 500})
--- local nFrameId = WinCreate.CreateFrame( WIN_FRAME_TYPES.THREE_CENTERED_ARC, { FrameJointType, FrameJointType, WIN_JNT.ANGLED, WIN_JNT.ANGLED, WIN_JNT.ANGLED, WIN_JNT.ANGLED}, {1500, 1500, 1800, 200})
+-- local nFrameId = WinCreate.CreateFrame( WIN_FRAME_TYPES.THREE_CENTER_ARC, { FrameJointType, FrameJointType, WIN_JNT.ANGLED, WIN_JNT.ANGLED, WIN_JNT.ANGLED, WIN_JNT.ANGLED}, {1500, 1500, 1800, 200})
 
 
 ------------------------ Aggiunta split a griglia ------------------------
diff --git a/Designing/WinConst.lua b/Designing/WinConst.lua
index 99b6ec9..6ebd013 100644
--- a/Designing/WinConst.lua
+++ b/Designing/WinConst.lua
@@ -27,7 +27,7 @@ WIN_FRAME_TYPES = {
    SEGMENTAL_ARC = 5,
    POINTED_ARC = 6,
    TRG = 7,
-   THREE_CENTERED_ARC = 8,
+   THREE_CENTER_ARC = 8,
 }
 
 -- forme per anta
diff --git a/Designing/WinLib/WinCreate.lua b/Designing/WinLib/WinCreate.lua
index b61efcd..a4bae00 100644
--- a/Designing/WinLib/WinCreate.lua
+++ b/Designing/WinLib/WinCreate.lua
@@ -153,7 +153,7 @@ local function CreateFrameCurves( nLayerId, nType, vDim)
       EgtSetName( nLeftId, WIN_LEFT)
    
    -- arco a 3 centri
-   elseif nType == WIN_FRAME_TYPES.THREE_CENTERED_ARC then
+   elseif nType == WIN_FRAME_TYPES.THREE_CENTER_ARC then
       -- vDim[1] larghezza, vDim[2] altezza dei lati verticali, vDim[3] altezza complessiva, vDim[4] raggio di raccordo
       local nBottomId = EgtLine( nLayerId, ORIG(), Point3d( vDim[1], 0, 0))
       EgtSetName( nBottomId, WIN_BOTTOM)
diff --git a/Designing/WinLib/WinManageProject.lua b/Designing/WinLib/WinManageProject.lua
index 6f89aa4..9209b3d 100644
--- a/Designing/WinLib/WinManageProject.lua
+++ b/Designing/WinLib/WinManageProject.lua
@@ -58,6 +58,8 @@ local function GetFrameShape( sShape)
       return WIN_FRAME_TYPES.SEGMENTAL_ARC
    elseif sShape == 'DOUBLEARC' then
       return WIN_FRAME_TYPES.POINTED_ARC
+   elseif sShape == 'THREECENTERARC' then
+      return WIN_FRAME_TYPES.THREE_CENTER_ARC
    elseif sShape == 'TRIANGLE' then
       return WIN_FRAME_TYPES.TRG
    end