add language setter getter

@@ -102,6 +102,14 @@ public class swiftApi {
         UserDefaults.standard.set(newUserTag, forKey: "merchantIdUD")
     }
 
+    public func getLanguage() -> String {
+        return UserDefaults.standard.string(forKey: "languageUD") ?? ""
+    }
+
+    public func setLanguage(_ newLang: String) -> Void {
+        UserDefaults.standard.set(newLang, forKey: "languageUD")
+    }
+
     public func getStepsWebview() -> Int {
         return GlobalVariables.stepsWebview
     }
@@ -4035,6 +4043,8 @@ public class swiftApi {
     public func saveCustomerState(_ customer: CustomerStateModel) -> Void {
         GlobalVariables.customerState = customer
 
+        swiftApi().setLanguage(customer._language)
+        
         swiftApi().consumerIntegrationAsync(nonTelco: customer._nonTelco, acceptedConsent: customer._acceptedConsent, msisdnList: customer._msisdnList, guid: customer._guid, consumerIntegrationCallback, failureCallback: {errorCode in
             print("CUSTOMER STATE ERROR")
         })