diff --git a/VDSSample/ViewControllers/CheckBoxGroupViewController.swift b/VDSSample/ViewControllers/CheckBoxGroupViewController.swift
index 1352ced..296db60 100644
--- a/VDSSample/ViewControllers/CheckBoxGroupViewController.swift
+++ b/VDSSample/ViewControllers/CheckBoxGroupViewController.swift
@@ -62,13 +62,13 @@ class  CheckboxGroupViewController: BaseViewController {
     }
     
     func setupModel() {
-        var checkbox1 = Checkbox()
+        let checkbox1 = Checkbox()
         checkbox1.inputId = "model1"
         checkbox1.value = "model 1 Value"
         checkbox1.labelText = "iPhone 11 Bundle 1"
         checkbox1.childText = "Apple iPhone 11 - 64 GB\nOtterbox Case Red\nScreen Protector"
         
-        var checkbox2 = Checkbox()
+        let checkbox2 = Checkbox()
         checkbox2.inputId = "model2"
         checkbox2.value = "model 2 Value"
         checkbox2.labelText = "iPhone 11 Bundle 2"
diff --git a/VDSSample/ViewControllers/RadioBoxGroupViewController.swift b/VDSSample/ViewControllers/RadioBoxGroupViewController.swift
index c82b720..be73f23 100644
--- a/VDSSample/ViewControllers/RadioBoxGroupViewController.swift
+++ b/VDSSample/ViewControllers/RadioBoxGroupViewController.swift
@@ -72,7 +72,7 @@ class  RadioBoxGroupViewController: BaseViewController {
     
     func setupModel(){
 
-        var radioBox1 = RadioBox()
+        let radioBox1 = RadioBox()
         radioBox1.inputId = "model1"
         radioBox1.isSelected = true
         radioBox1.value = "model 1 Value"
@@ -80,7 +80,7 @@ class  RadioBoxGroupViewController: BaseViewController {
         radioBox1.subText = "Apple iPhone 11 - 64 GB\nOtterbox Case Red\nScreen Protector"
         radioBox1.subTextRight = "Right Text"
 
-        var radioBox2 = RadioBox()
+        let radioBox2 = RadioBox()
         radioBox2.inputId = "model2"
         radioBox2.value = "model 2 Value"
         radioBox2.text = "iPhone 11 Bundle 2"