diff --git a/src/eez/flow.cpp b/src/eez/flow.cpp
index 300c3d782..bb183da9a 100644
--- a/src/eez/flow.cpp
+++ b/src/eez/flow.cpp
@@ -575,8 +575,8 @@ static FlowState *initFlowState(Assets *assets, int flowIndex) {
 	}
 
 	for (unsigned i = 0; i < flow->localVariables.count; i++) {
-		auto &value = *flow->localVariables.item(assets, i);
-		flowState->values[flow->nInputValues + i] = value;
+		auto value = flow->localVariables.item(assets, i);
+		flowState->values[flow->nInputValues + i] = *value;
 	}
 
 	return flowState;
diff --git a/src/eez/gui/assets.h b/src/eez/gui/assets.h
index f7f6ef68e..d653e9515 100644
--- a/src/eez/gui/assets.h
+++ b/src/eez/gui/assets.h
@@ -100,7 +100,7 @@ struct Widget {
 	int16_t y;
 	int16_t w;
 	int16_t h;
-	uint16_t style;
+	int16_t style;
 };
 
 struct ContainerWidget : public Widget {
diff --git a/src/eez/gui/draw.cpp b/src/eez/gui/draw.cpp
index df213d9fb..13fb2f91d 100644
--- a/src/eez/gui/draw.cpp
+++ b/src/eez/gui/draw.cpp
@@ -1077,6 +1077,13 @@ void drawArcBar(int xCenter, int yCenter, int radius, float fromAngleDeg, float
 }
 
 void fillArcBar(int xCenter, int yCenter, int radius, float fromAngleDeg, float toAngleDeg, int width) {
+	if (isNaN(fromAngleDeg) || fromAngleDeg < 0) {
+		fromAngleDeg = 0;
+	}
+	if (isNaN(toAngleDeg) || toAngleDeg > 360.0f) {
+		toAngleDeg = 360.0f;
+	}
+
 	static const size_t N = 200;
 	int16_t vx[N + 8];
 	int16_t vy[N + 8];
diff --git a/src/eez/gui/widgets/bar_graph.cpp b/src/eez/gui/widgets/bar_graph.cpp
index 53b430b35..19342d158 100644
--- a/src/eez/gui/widgets/bar_graph.cpp
+++ b/src/eez/gui/widgets/bar_graph.cpp
@@ -39,11 +39,11 @@ namespace gui {
 #define BAR_GRAPH_DO_NOT_DISPLAY_VALUE (1 << 4)
 
 struct BarGraphWidget : public Widget {
-    uint16_t textStyle;
+    int16_t textStyle;
     int16_t line1Data;
-    uint16_t line1Style;
+    int16_t line1Style;
     int16_t line2Data;
-    uint16_t line2Style;
+    int16_t line2Style;
     uint8_t orientation; // BAR_GRAPH_ORIENTATION_...
 };
 
diff --git a/src/eez/gui/widgets/button.h b/src/eez/gui/widgets/button.h
index 29264fca0..b716ef5ee 100644
--- a/src/eez/gui/widgets/button.h
+++ b/src/eez/gui/widgets/button.h
@@ -24,7 +24,7 @@ namespace gui {
 struct ButtonWidget : public Widget {
     AssetsPtr<const char> text;
     int16_t enabled;
-    uint16_t disabledStyle;
+    int16_t disabledStyle;
 };
 
 } // namespace gui
diff --git a/src/eez/gui/widgets/button_group.cpp b/src/eez/gui/widgets/button_group.cpp
index c01a5f543..ccb4241ae 100644
--- a/src/eez/gui/widgets/button_group.cpp
+++ b/src/eez/gui/widgets/button_group.cpp
@@ -29,7 +29,7 @@ namespace eez {
 namespace gui {
 
 struct ButtonGroupWidget : public Widget {
-    uint16_t selectedStyle;
+    int16_t selectedStyle;
 };
 
 EnumFunctionType BUTTON_GROUP_enum = nullptr;
diff --git a/src/eez/gui/widgets/gauge.cpp b/src/eez/gui/widgets/gauge.cpp
index e0c25bf8e..8795e241a 100644
--- a/src/eez/gui/widgets/gauge.cpp
+++ b/src/eez/gui/widgets/gauge.cpp
@@ -32,8 +32,8 @@ struct GaugeWidget : public Widget {
     int16_t min;
 	int16_t max;
 	int16_t threashold;
-    uint16_t barStyle;
-	uint16_t thresholdStyle;
+    int16_t barStyle;
+	int16_t thresholdStyle;
 };
 
 EnumFunctionType GAUGE_enum = nullptr;
@@ -55,8 +55,8 @@ DrawFunctionType GAUGE_draw = [](const WidgetCursor &widgetCursor) {
 
 		static const int BORDER_WIDTH = 32;
 		static const int BAR_WIDTH = 16;
-		float min = 0.0f;
-		float max = 40.0f;
+		float min = get(widgetCursor, widget->min).toFloat();
+		float max = get(widgetCursor, widget->max).toFloat();
 
 		const Style* barStyle = getStyle(widget->barStyle);
 		mcu::display::setColor(barStyle->color);
diff --git a/src/eez/gui/widgets/list_graph.cpp b/src/eez/gui/widgets/list_graph.cpp
index c83d1b146..7aa770c0a 100644
--- a/src/eez/gui/widgets/list_graph.cpp
+++ b/src/eez/gui/widgets/list_graph.cpp
@@ -33,11 +33,11 @@ namespace gui {
 struct ListGraphWidget : public Widget {
     int16_t dwellData;
     int16_t y1Data;
-    uint16_t y1Style;
+    int16_t y1Style;
     int16_t y2Data;
-    uint16_t y2Style;
+    int16_t y2Style;
     int16_t cursorData;
-    uint16_t cursorStyle;
+    int16_t cursorStyle;
 };
 
 struct ListGraphWidgetState {
diff --git a/src/eez/gui/widgets/scroll_bar.cpp b/src/eez/gui/widgets/scroll_bar.cpp
index 8d794f12f..de46e024a 100644
--- a/src/eez/gui/widgets/scroll_bar.cpp
+++ b/src/eez/gui/widgets/scroll_bar.cpp
@@ -34,8 +34,8 @@ namespace eez {
 namespace gui {
 
 struct ScrollBarWidget : public Widget {
-    uint16_t thumbStyle;
-    uint16_t buttonsStyle;
+    int16_t thumbStyle;
+    int16_t buttonsStyle;
     AssetsPtr<const char> leftButtonText;
 	AssetsPtr<const char> rightButtonText;
 };
diff --git a/src/eez/gui/widgets/up_down.cpp b/src/eez/gui/widgets/up_down.cpp
index f1f041c45..91314a40d 100644
--- a/src/eez/gui/widgets/up_down.cpp
+++ b/src/eez/gui/widgets/up_down.cpp
@@ -30,7 +30,7 @@ namespace gui {
 struct UpDownWidget : public Widget {
     AssetsPtr<const char> downButtonText;
 	AssetsPtr<const char> upButtonText;
-    uint16_t buttonsStyle;
+    int16_t buttonsStyle;
 };
 
 EnumFunctionType UP_DOWN_enum = nullptr;