Ionic integration with Paypal

Hi, I have been trying to integrate ‘com.paypal.cordova.mobilesdk’ with my mobile app, I was successfully integrated this plugin with android, but with ios it’s giving me error telling that

5 451589 error Error: Can't find variable: PayPalMobile

I’ve put ‘cdv-plugin-paypal-mobile-sdk.js’, ‘paypal-mobile-js-helper.js’ in the js folder and added the ‘paypal-mobile-js-helper.js’ to the index.html,
I tried so many ways to figure this out my own but still have no luck,
if anyone could help me to solve this I would really appreciate it

Thank you!