Error using Unity as a library in IOS with Vuforia

I've followed thi ( https://forum.unity.com/threads/integration-unity-as-a-library-in-native-ios-app.685219/ ) tutorial and added the unity project to a native ios app and worked.

Then i've added vuforia and followed also the vuforia tutorial ( https://library.vuforia.com/content...g-vuforia-engine-with-unity-as-a-library.html )
I managed to make it work for android but for ios i got an error saying that the vuforia framework could not be foud.
Can anyone help?