processArguments not being sent to iOS App


I’m trying to send processArguments using caps by adding :
processArguments: {“AppUnderTest”: true}

On the iOS app side I don’t get the arguments using:
if ProcessInfo.processInfo.arguments.contains(“AppUnderTest”) {
//do things

Any ideas why it doesn’t work?
I’m using Appium 1.7.1 (with Ruby lib), Xcode 9, iOS 11

Thank you for your help

hello @abdennour : were you able to find a solution for this? I am looking for information on the same