diff --git a/samples/charts/data-chart/data-annotation-band-layer/src/app.component.html b/samples/charts/data-chart/data-annotation-band-layer/src/app.component.html
index 6a5a2bcba..504124097 100644
--- a/samples/charts/data-chart/data-annotation-band-layer/src/app.component.html
+++ b/samples/charts/data-chart/data-annotation-band-layer/src/app.component.html
@@ -86,7 +86,7 @@
           <igx-data-tool-tip-layer
           name="Tooltip"
           #tooltip
-          includedColumns="high, low, open, close"
+          includedColumns="High, Low, Open, Close"
           layoutMode="Vertical">
           </igx-data-tool-tip-layer>
           <igx-data-annotation-band-layer
diff --git a/samples/charts/data-chart/data-annotation-line-layer/src/app.component.html b/samples/charts/data-chart/data-annotation-line-layer/src/app.component.html
index df377dad3..5d1e1af41 100644
--- a/samples/charts/data-chart/data-annotation-line-layer/src/app.component.html
+++ b/samples/charts/data-chart/data-annotation-line-layer/src/app.component.html
@@ -74,7 +74,7 @@
           <igx-data-tool-tip-layer
           name="Tooltip"
           #tooltip
-          includedColumns="high, low, open, close"
+          includedColumns="High, Low, Open, Close"
           layoutMode="Vertical">
           </igx-data-tool-tip-layer>
           <igx-data-annotation-line-layer
diff --git a/samples/charts/data-chart/data-annotation-multiple-with-stocks/src/app.component.html b/samples/charts/data-chart/data-annotation-multiple-with-stocks/src/app.component.html
index 03055daae..57d2efac4 100644
--- a/samples/charts/data-chart/data-annotation-multiple-with-stocks/src/app.component.html
+++ b/samples/charts/data-chart/data-annotation-multiple-with-stocks/src/app.component.html
@@ -105,7 +105,7 @@
           <igx-data-tool-tip-layer
           name="Tooltip"
           #tooltip
-          includedColumns="high, low, open, close"
+          includedColumns="High, Low, Open, Close"
           layoutMode="Vertical">
           </igx-data-tool-tip-layer>
           <igx-data-annotation-strip-layer
diff --git a/samples/charts/data-chart/data-annotation-rect-layer/src/app.component.html b/samples/charts/data-chart/data-annotation-rect-layer/src/app.component.html
index ca44b1365..9ca2d92dd 100644
--- a/samples/charts/data-chart/data-annotation-rect-layer/src/app.component.html
+++ b/samples/charts/data-chart/data-annotation-rect-layer/src/app.component.html
@@ -52,7 +52,7 @@
           <igx-data-tool-tip-layer
           name="Tooltip"
           #tooltip
-          includedColumns="high, low, open, close"
+          includedColumns="High, Low, Open, Close"
           layoutMode="Vertical">
           </igx-data-tool-tip-layer>
           <igx-data-annotation-rect-layer
diff --git a/samples/charts/data-chart/data-annotation-slice-layer/src/app.component.html b/samples/charts/data-chart/data-annotation-slice-layer/src/app.component.html
index 6959ef550..cabb90536 100644
--- a/samples/charts/data-chart/data-annotation-slice-layer/src/app.component.html
+++ b/samples/charts/data-chart/data-annotation-slice-layer/src/app.component.html
@@ -87,7 +87,7 @@
           <igx-data-tool-tip-layer
           name="Tooltip"
           #tooltip
-          includedColumns="high, low, open, close"
+          includedColumns="High, Low, Open, Close"
           layoutMode="Vertical">
           </igx-data-tool-tip-layer>
           <igx-data-annotation-slice-layer
diff --git a/samples/charts/data-chart/data-annotation-strip-layer/src/app.component.html b/samples/charts/data-chart/data-annotation-strip-layer/src/app.component.html
index d7f98b848..27d81425e 100644
--- a/samples/charts/data-chart/data-annotation-strip-layer/src/app.component.html
+++ b/samples/charts/data-chart/data-annotation-strip-layer/src/app.component.html
@@ -89,7 +89,7 @@
           <igx-data-tool-tip-layer
           name="Tooltip"
           #tooltip
-          includedColumns="high, low, open, close"
+          includedColumns="High, Low, Open, Close"
           layoutMode="Vertical">
           </igx-data-tool-tip-layer>
           <igx-data-annotation-strip-layer
diff --git a/samples/charts/data-chart/data-legend/src/app.component.html b/samples/charts/data-chart/data-legend/src/app.component.html
index 5ea484c73..78be73b8b 100644
--- a/samples/charts/data-chart/data-legend/src/app.component.html
+++ b/samples/charts/data-chart/data-legend/src/app.component.html
@@ -8,7 +8,7 @@
       #legend
       [target]="chart"
       unitsText="%"
-      includedColumns="birthRate, deathRate">
+      includedColumns="BirthRate, DeathRate">
       </igx-data-legend>
   </div>
   <div class="container fill">
diff --git a/samples/charts/data-chart/scatter-bubble-chart-fill-scale/src/app.component.html b/samples/charts/data-chart/scatter-bubble-chart-fill-scale/src/app.component.html
index c9cddb213..8f7ee8b18 100644
--- a/samples/charts/data-chart/scatter-bubble-chart-fill-scale/src/app.component.html
+++ b/samples/charts/data-chart/scatter-bubble-chart-fill-scale/src/app.component.html
@@ -64,7 +64,7 @@
           labelTextMarginLeft="1"
           layoutMode="Vertical"
           badgeShape="Hidden"
-          includedColumns="x, y, radius"
+          includedColumns="X, Y, Radius"
           headerRowVisible="false">
           </igx-data-tool-tip-layer>
       </igx-data-chart>
diff --git a/samples/charts/data-chart/scatter-bubble-chart-styling/src/app.component.html b/samples/charts/data-chart/scatter-bubble-chart-styling/src/app.component.html
index dab770046..0fdc9400f 100644
--- a/samples/charts/data-chart/scatter-bubble-chart-styling/src/app.component.html
+++ b/samples/charts/data-chart/scatter-bubble-chart-styling/src/app.component.html
@@ -62,7 +62,7 @@
           labelTextMarginLeft="1"
           layoutMode="Vertical"
           badgeShape="Hidden"
-          includedColumns="x, y, radius"
+          includedColumns="X, Y, Radius"
           headerRowVisible="false">
           </igx-data-tool-tip-layer>
       </igx-data-chart>
diff --git a/samples/charts/financial-chart/data-legend-formatting-currency/src/app.component.html b/samples/charts/financial-chart/data-legend-formatting-currency/src/app.component.html
index a540ba4b4..15cadf420 100644
--- a/samples/charts/financial-chart/data-legend-formatting-currency/src/app.component.html
+++ b/samples/charts/financial-chart/data-legend-formatting-currency/src/app.component.html
@@ -4,8 +4,8 @@
       name="legend"
       #legend
       [target]="chart"
-      includedColumns="close, change, value"
-      excludedColumns="high, low, open, volume"
+      includedColumns="Close, Change, Value"
+      excludedColumns="High, Low, Open, Volume"
       labelDisplayMode="Hidden"
       valueFormatMode="Currency"
       valueFormatCulture="en-GB">
diff --git a/samples/charts/financial-chart/data-legend-styling-props/src/app.component.html b/samples/charts/financial-chart/data-legend-styling-props/src/app.component.html
index 91856a041..f39ce24ff 100644
--- a/samples/charts/financial-chart/data-legend-styling-props/src/app.component.html
+++ b/samples/charts/financial-chart/data-legend-styling-props/src/app.component.html
@@ -4,7 +4,7 @@
       name="legend"
       #legend
       [target]="chart"
-      includedColumns="open, close, high, low, change"
+      includedColumns="Open, Close, High, Low, Change"
       labelTextColor="rgba(74, 74, 74, 1)"
       unitsText="K"
       unitsTextColor="rgba(0, 173, 3, 1)"
diff --git a/samples/charts/financial-chart/data-legend/src/app.component.html b/samples/charts/financial-chart/data-legend/src/app.component.html
index 9d315815a..2a9c0a204 100644
--- a/samples/charts/financial-chart/data-legend/src/app.component.html
+++ b/samples/charts/financial-chart/data-legend/src/app.component.html
@@ -4,7 +4,7 @@
       name="legend"
       #legend
       [target]="chart"
-      includedColumns="open, close, high, low, change">
+      includedColumns="Open, Close, High, Low, Change">
       </igx-data-legend>
   </div>
   <div class="container fill">
diff --git a/samples/charts/financial-chart/format-specifiers/src/app.component.html b/samples/charts/financial-chart/format-specifiers/src/app.component.html
index f96891b2f..cf4bc77ec 100644
--- a/samples/charts/financial-chart/format-specifiers/src/app.component.html
+++ b/samples/charts/financial-chart/format-specifiers/src/app.component.html
@@ -4,8 +4,8 @@
       name="legend"
       #legend
       [target]="chart"
-      includedColumns="close, change, value"
-      excludedColumns="high, low, open, volume"
+      includedColumns="Close, Change, Value"
+      excludedColumns="High, Low, Open, Volume"
       labelDisplayMode="Hidden"
       valueFormatString="{0}"
       [valueFormatSpecifiers]="numberFormatSpecifier1">