diff --git a/LuaLibs/WallExec.lua b/LuaLibs/WallExec.lua
index 0aad1d4..4eb0bf0 100644
--- a/LuaLibs/WallExec.lua
+++ b/LuaLibs/WallExec.lua
@@ -71,40 +71,40 @@ local function GetRawOrigAndDeltas()
       sOrigCorner = WD.GetOrigCorner( EgtGetInfo( BtlInfoId, 'REFPOS', 'i') or 0)
    end
    -- offset da interfaccia
-   local dDeltaXFromBtl = EgtGetInfo( BtlInfoId, 'PANELDELTAY', 'd') or 0
-   local dDeltaYFromBtl = EgtGetInfo( BtlInfoId, 'PANELDELTAX', 'd') or 0
-   local dDeltaZFromBtl = EgtGetInfo( BtlInfoId, 'PANELDELTAZ', 'd') or 0
+   local dDeltaXFromBtl = EgtGetInfo( BtlInfoId, 'PANELDELTAY', 'd')
+   local dDeltaYFromBtl = EgtGetInfo( BtlInfoId, 'PANELDELTAX', 'd')
+   local dDeltaZFromBtl = EgtGetInfo( BtlInfoId, 'PANELDELTAZ', 'd')
    -- se da interfaccia arriva un valore > 0 si usa quello, altrimenti si legge da WallData (default 0)
-   local DeltaX = EgtIf( dDeltaXFromBtl > 0, dDeltaXFromBtl, WD.DELTA_X or 0)
-   local DeltaY = EgtIf( dDeltaYFromBtl > 0, dDeltaYFromBtl, WD.DELTA_Y or 0)
-   local DeltaZ = EgtIf( dDeltaZFromBtl > 0, dDeltaZFromBtl, WD.DELTA_Z or 0)
+   local DeltaX = EgtIf( dDeltaXFromBtl, dDeltaXFromBtl, WD.DELTA_X or 0)
+   local DeltaY = EgtIf( dDeltaYFromBtl, dDeltaYFromBtl, WD.DELTA_Y or 0)
+   local DeltaZ = EgtIf( dDeltaZFromBtl, dDeltaZFromBtl, WD.DELTA_Z or 0)
 
    local nCorner
    local OrigOnTab
    if sOrigCorner == 'TL' then
       nCorner = MCH_CR.TL
-      OrigOnTab = Point3d( 0 + abs( DeltaX), b3Tab:getDimY() - abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( 0 + DeltaX, b3Tab:getDimY() - DeltaY, DeltaZ)
    elseif sOrigCorner == 'BL' then
       nCorner = MCH_CR.BL
-      OrigOnTab = Point3d( 0 + abs( DeltaX), abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( 0 + DeltaX, DeltaY, DeltaZ)
    elseif sOrigCorner == 'TR' then
       nCorner = MCH_CR.TR
-      OrigOnTab = Point3d( b3Tab:getDimX() - abs( DeltaX), b3Tab:getDimY() - abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( b3Tab:getDimX() - DeltaX, b3Tab:getDimY() - DeltaY, DeltaZ)
    elseif sOrigCorner == 'BR' then
       nCorner = MCH_CR.BR
-      OrigOnTab = Point3d( b3Tab:getDimX() - abs( DeltaX), abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( b3Tab:getDimX() - DeltaX, DeltaY, DeltaZ)
    elseif sOrigCorner == 'TM' then
       nCorner = MCH_CR.TR
-      OrigOnTab = Point3d( WD.MID_REF - abs( DeltaX), b3Tab:getDimY() - abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( WD.MID_REF - DeltaX, b3Tab:getDimY() - DeltaY, DeltaZ)
    elseif sOrigCorner == 'BM' then
       nCorner = MCH_CR.BR
-      OrigOnTab = Point3d( WD.MID_REF - abs( DeltaX), abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( WD.MID_REF - DeltaX, DeltaY, DeltaZ)
    elseif sOrigCorner == 'TN' then
       nCorner = MCH_CR.TL
-      OrigOnTab = Point3d( WD.NEW_REF + abs( DeltaX), b3Tab:getDimY() - abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( WD.NEW_REF + DeltaX, b3Tab:getDimY() - DeltaY, DeltaZ)
    elseif sOrigCorner == 'BN' then
       nCorner = MCH_CR.BL
-      OrigOnTab = Point3d( WD.NEW_REF + abs( DeltaX), abs( DeltaY), DeltaZ)
+      OrigOnTab = Point3d( WD.NEW_REF + DeltaX, DeltaY, DeltaZ)
    end
 
    return sOrigCorner, nCorner, OrigOnTab