diff --git a/MatterControlLib/DesignTools/Operations/ArrayLinearObject3D.cs b/MatterControlLib/DesignTools/Operations/ArrayLinearObject3D.cs
index eb3865667..c57147547 100644
--- a/MatterControlLib/DesignTools/Operations/ArrayLinearObject3D.cs
+++ b/MatterControlLib/DesignTools/Operations/ArrayLinearObject3D.cs
@@ -96,7 +96,7 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
 
 						var updateItems = SheetObject3D.SortAndLockUpdateItems(this, (item) =>
 						{
-							if (!SheetObject3D.HasExpressionWithString(item, "[index]", false))
+							if (!SheetObject3D.HasExpressionWithString(item, "=", true))
 							{
 								return false;
 							}
diff --git a/MatterControlLib/SlicerConfiguration/UIFields/Vector3Field.cs b/MatterControlLib/SlicerConfiguration/UIFields/Vector3Field.cs
index 91ebe4160..0697093ed 100644
--- a/MatterControlLib/SlicerConfiguration/UIFields/Vector3Field.cs
+++ b/MatterControlLib/SlicerConfiguration/UIFields/Vector3Field.cs
@@ -71,7 +71,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 
 			double.TryParse(xyzStrings[0], out double currentXValue);
 
-			xEditWidget = new MHNumberEdit(currentXValue, theme, 'X', allowNegatives: true, allowDecimals: true, pixelWidth: VectorXYZEditWidth, tabIndex: tabIndex)
+			xEditWidget = new MHNumberEdit(currentXValue, theme, 'X', allowNegatives: true, allowDecimals: true, pixelWidth: VectorXYZEditWidth, tabIndex: tabIndex++)
 			{
 				ToolTipText = this.HelpText,
 				TabIndex = tabIndex,
@@ -93,7 +93,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 
 			double.TryParse(xyzStrings[1], out double currentYValue);
 
-			yEditWidget = new MHNumberEdit(currentYValue, theme, 'Y', allowNegatives: true, allowDecimals: true, pixelWidth: VectorXYZEditWidth, tabIndex: tabIndex)
+			yEditWidget = new MHNumberEdit(currentYValue, theme, 'Y', allowNegatives: true, allowDecimals: true, pixelWidth: VectorXYZEditWidth, tabIndex: tabIndex++)
 			{
 				ToolTipText = this.HelpText,
 				TabIndex = tabIndex + 1,
@@ -115,7 +115,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 
 			double.TryParse(xyzStrings[2], out double currentZValue);
 
-			zEditWidget = new MHNumberEdit(currentZValue, theme, 'Z', allowNegatives: true, allowDecimals: true, pixelWidth: VectorXYZEditWidth, tabIndex: tabIndex)
+			zEditWidget = new MHNumberEdit(currentZValue, theme, 'Z', allowNegatives: true, allowDecimals: true, pixelWidth: VectorXYZEditWidth, tabIndex: tabIndex++)
 			{
 				ToolTipText = this.HelpText,
 				TabIndex = tabIndex + 1,