diff --git a/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.html b/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.html
index d01cfdf..e5ed8f6 100644
--- a/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.html
+++ b/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.html
@@ -1,4 +1,4 @@
-<div (resized)="onResized($event)" style="height:100%;width:100%;">
+<div (resized)="onResized($event)" style="height:99%;width:99%;">
 
         <div echarts [options]="chartOption" class="demo-chart" #chartBox [style.height.px]="height"
                 [style.width.px]="width"></div>
diff --git a/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.ts b/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.ts
index 5de0e8e..101f8ab 100644
--- a/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.ts
+++ b/projects/gp-smart-echart-widget/src/lib/gp-smart-echart-widget.component.ts
@@ -180,6 +180,9 @@ export class GpSmartEchartWidgetComponent implements OnInit {
     if (!userInput.aggrList) {
       userInput.aggrList = [];
     }
+    if (!userInput.stackList) {
+      userInput.stackList = [];
+    }
     if (this.serviceData) {
       this.dataChart.hideLoading();
       let axisFontSize = 0;
diff --git a/projects/gp-smart-echart-widget/src/lib/smart-chart-config/smart-chart-config.component.ts b/projects/gp-smart-echart-widget/src/lib/smart-chart-config/smart-chart-config.component.ts
index 0c2645d..174c158 100644
--- a/projects/gp-smart-echart-widget/src/lib/smart-chart-config/smart-chart-config.component.ts
+++ b/projects/gp-smart-echart-widget/src/lib/smart-chart-config/smart-chart-config.component.ts
@@ -280,6 +280,11 @@ export class SmartChartConfigComponent implements OnInit {
     } else {
       this.isAggrAdded = true;
     }
+    if (!this.config.stackList) {
+      this.config.stackList = [];
+    } else {
+      this.config.addStack = true;
+    }
     this.config.legend = {};
     // Default value for datahub sql query
     if (this.config.datahubUrl === null || this.config.datahubUrl === undefined) {
@@ -355,7 +360,7 @@ export class SmartChartConfigComponent implements OnInit {
             this.config.layout = val.layout[0].id;
           }
         });
-      }else {
+      } else {
         this.chartData.chartLayout.filter(val => {
           if (value === val.id) {
             this.chartLayoutData = val.layout;
@@ -363,7 +368,7 @@ export class SmartChartConfigComponent implements OnInit {
           }
         });
       }
-    }else {
+    } else {
       sessionStorage.setItem('chartType', this.config.type);
     }
     if (this.config.type === 'bar' || this.config.type === 'line') {