Interpolated strings in Oxygene: how to specify the format?

How to specify the format for interpolated strings in Oxygene?

For example, C# uses {i:G}, if i is an integer and I want to display it in the general format.
This doesn’t work in Oxygene, because : is an operator and it tries to get the member named G of the integer value.

We don’t support this in Oxygene. If you need more flexible formatting, you’ll need to use System.String.Format, at this point.