Conditional formatting on a field based on field length

Hi Dayna ,

My idea is to create a what-if parameter, get its value and save it as a variable to be passed to the code in the conditional format.

Use parameters to visualize variables - Power BI | Microsoft Learn
Then create 2 measures for conditional format:

Measure 1 = 
VAR _len = MAX('Lengths'[Lengths])
VAR _result = IF(LEN(MAX('Table'[Barcode 1]))=_len,"Green","Red")
RETURN
_result

Measure 2 = 
VAR _len = MAX('Lengths'[Lengths])
VAR _result = IF(LEN(MAX('Table'[Barcode 2]))=_len,"Green","Red")
RETURN
_result

When the length parameter is changed, the condition format also changes.

Best Regards,
Gao
Community Support Team

If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly.
If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

How to get your questions answered quickly --  How to provide sample data in the Power BI Forum