Model hit and model download nothing to show message udpate

smart_service/add_ons/report/model_download_report/model_download_report.js

@@ -24,8 +24,27 @@ frappe.query_reports["Model Download Report"] = {
 			"label": __("Model"),
 			"fieldtype": "Link",
 			"options" : "Vehicle",
-			"reqd": 0
+			"reqd": 0,
+			"on_change":function() {
+				model = frappe.query_report.get_filter_value('model');
+                if (!model) {
+				setTimeout(function mysam(){
+					$('.msg-box').empty()
+					$('.msg-box').append('<div><img src="/assets/frappe/images/ui-states/list-empty-state.svg" alt="Generic Empty State" class="null-state"></div><p>Please Enter the Model</p>')
+		
+				},200)
+				}
+				frappe.query_report.refresh();
+			}
 		}
 
-	]
+	],
+	"onload":function(){
+		setTimeout(function mysam(){
+			$('.msg-box').empty()
+			$('.msg-box').append('<div><img src="/assets/frappe/images/ui-states/list-empty-state.svg" alt="Generic Empty State" class="null-state"></div><p>Please Enter the Model</p>')
+
+		},400)
+		
+	}
 };

smart_service/add_ons/report/model_hit_report/model_hit_report.js

@@ -24,7 +24,18 @@ frappe.query_reports["Model Hit Report"] = {
 			"label": __("Model"),
 			"fieldtype": "Link",
 			"options" : "Vehicle",
-			"reqd": 0
+			"reqd": 0,
+			"on_change":function() {
+				model = frappe.query_report.get_filter_value('model');
+                if (!model) {
+				setTimeout(function mysam(){
+					$('.msg-box').empty()
+					$('.msg-box').append('<div><img src="/assets/frappe/images/ui-states/list-empty-state.svg" alt="Generic Empty State" class="null-state"></div><p>Please Enter the Model</p>')
+		
+				},200)
+				}
+				frappe.query_report.refresh();
+			}
 		},
 		{
 			"fieldname":"variant",
@@ -44,6 +55,14 @@ frappe.query_reports["Model Hit Report"] = {
 		}
 
 	],
+	"onload":function(){
+		setTimeout(function mysam(){
+			$('.msg-box').empty()
+			$('.msg-box').append('<div><img src="/assets/frappe/images/ui-states/list-empty-state.svg" alt="Generic Empty State" class="null-state"></div><p>Please Enter the Model</p>')
+
+		},400)
+		
+	},
 	"formatter": function (value, row, column, data, default_formatter) {