How to convert string characters to upper case

In rule i have item LocalComputer_Network_MacAddress.

The result logInfo(“Rule”, "MAC -> " + LocalComputer_Network_MacAddress.state) is b8:27:eb:b9:32:c5, but i need all characters to upper case (B8:27:EB:B9:32:C5).

How can i do this?


You should really use .toString anyway.
When you do use it, you get access to more methods

Thanks a lot!

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