Hello Ponilango
This idea could be implemented directly in SQL query, using "/10" in selected column.
The result is the same.
But in this way, the user loses the direct conversion between image and logic.
For example, if range is 5 and column X value is 16 to 17...real range is...boh: he needs a calculator.
For this reason, I cannot use this method.
Thank you
Best regards
Fabio