Is there any function available or perhaps a program flow code?
Is it in general possible to realize this in UIflow blocks?

Just found an information how to create a custom block with Python.
Perhaps it already exists a m5b file? Otherwise I will try to create an m5b file.

Any other idea, how to convert float to decimal in UIflow?

Added:
I am reading out a smart meter with M5stack and UIflow:

The result is a floating point format value, here 17008.

Converting into decimal is not available in UIflow and converting into an integer value is not working, as expected.
Therefore the second value on display shows nothing (only default text).