Update scenario-mobile-acquire-token.md

Author: oldalton

articles/active-directory/develop/scenario-mobile-acquire-token.md

@@ -149,7 +149,7 @@ If MSAL returns `MSALErrorInteractionRequired`, then try acquiring tokens intera
 
 ```objc
 UIViewController *viewController = ...; // Pass a reference to the view controller that should be used when getting a token interactively
-MSALWebviewParameters *webParameters = [[MSALWebviewParameters alloc] initWithParentViewController:viewController];
+MSALWebviewParameters *webParameters = [[MSALWebviewParameters alloc] initWithAuthPresentationViewController:viewController];
 MSALInteractiveTokenParameters *interactiveParams = [[MSALInteractiveTokenParameters alloc] initWithScopes:scopes webviewParameters:webParameters];
 [application acquireTokenWithParameters:interactiveParams completionBlock:^(MSALResult *result, NSError *error) {
 	if (!error)	
@@ -165,7 +165,7 @@ MSALInteractiveTokenParameters *interactiveParams = [[MSALInteractiveTokenParame
 
 ```swift
 let viewController = ... // Pass a reference to the view controller that should be used when getting a token interactively
-let webviewParameters = MSALWebviewParameters(parentViewController: viewController)
+let webviewParameters = MSALWebviewParameters(authPresentationViewController: viewController)
 let interactiveParameters = MSALInteractiveTokenParameters(scopes: scopes, webviewParameters: webviewParameters)
 application.acquireToken(with: interactiveParameters, completionBlock: { (result, error) in