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kotlinlang

Hi, I need to format strings, so I  copied the snippet from the <http://kotlinglang.org|kotlinglang.org>

```
// Common
expect fun formatString(source: String, vararg args: Any): String

// JVM
actual fun formatString(source: String, vararg args: Any) =
    String.format(source, args)
```
but when I run the tests, I get `java.util.IllegalFormatConversionException: x != [Ljava.lang.Object;` for this line `formatString("%04X", value)`  (value is Long).

for the Native it part works (snipped copied from a github thread). After looking through all the internet I couldn’t find a solution or reason