diff --git a/MatterControl.Printing/Settings/SliceSettingsFields.cs b/MatterControl.Printing/Settings/SliceSettingsFields.cs
index 39a9b2ab6..132822ec2 100644
--- a/MatterControl.Printing/Settings/SliceSettingsFields.cs
+++ b/MatterControl.Printing/Settings/SliceSettingsFields.cs
@@ -82,8 +82,6 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 					HelpText = "When filling bottom and top solid layers always create them so that each new print segment side is touching a previous segment on the same side.".Localize(),
 					DataEditType = DataEditTypes.CHECK_BOX,
 					DefaultValue = "0",
-					RequiredDisplayDetail = DisplayDetailRequired.Advanced,
-					UiUpdate = UiUpdateRequired.SliceSettings,
 					Converter = new MappedToBoolString(),
 				},
 				new SliceSettingData()
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/DesignTools/Sheets/SheetObject3D.cs b/MatterControlLib/DesignTools/Sheets/SheetObject3D.cs
index dc79bf180..0a8c1d123 100644
--- a/MatterControlLib/DesignTools/Sheets/SheetObject3D.cs
+++ b/MatterControlLib/DesignTools/Sheets/SheetObject3D.cs
@@ -343,8 +343,7 @@ namespace MatterHackers.MatterControl.DesignTools
 				int index = 0;
 				foreach (var child in arrayObject.Children)
 				{
-					if (!(child is OperationSourceContainerObject3D)
-						&& !(child is OperationSourceObject3D))
+					if (!(child is OperationSourceObject3D))
 					{
 						if (child.DescendantsAndSelf().Where(i => i == owner).Any())
 						{
@@ -385,8 +384,9 @@ namespace MatterHackers.MatterControl.DesignTools
 			return stringWithConstants;
 		}
 
-		public static T EvaluateExpression<T>(IObject3D owner, string inputExpression)
+		public static T EvaluateExpression<T>(IObject3D owner, string inExpression)
 		{
+			var inputExpression = inExpression;
 			var printer = owner.ContainingPrinter();
 			if (printer != null)
 			{
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,