You are assigning a number to the state "denon.0.display.brightness" which expects a string

[GitHoubi]

Everything works perfectly ever since. But there seems to be a problem with display.brightness datapoint. Full Warning Message in Log:

"You are assigning a number to the state "denon.0.display.brightness" which expects a string. Please fix your code to use a string or change the state type to number. This warning might become an error in future versions."

To Reproduce

1. Rule/Blockly which change state of display.brightness to any of the available options (off,dark,dimmed,bright).

Expected behavior
No warning in log

Screenshots & Logfiles

Versions:

• Adapter version: 1.15.5
• JS-Controller version: 6.0.5
• Node version: v18.20.3
• Operating system: Debian 12
• AVR model: Marantz AV8805

Additional context
This error exists like ever since (years). Everything works perfectly fine regarding the script or its functionality, also manually controlling the datapoint is all working fine. it's just the warning in the log. doing what the warning suggests actually does not help fixing the warning.