nRF Connect iOS byte array

We have an application that is looking to receive a value of 'test\0' in a custom characteristic. From the Android version of nRF Connect, I just do this with a byte array, add five values, and fill them appropriately:

In the iOS version of nRF Connect, I only see a single field, with no way to add new values. How do you enter more than one value into a byte array?

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