before the snapshots for 1.9, you were able to test for two different types of entity data relating to health, those being health, and healf. healf would send back a float number and health would send back an integer or a whole number. this needs to be brought BACK. or at least change the new health data to be a whole number. testing for entity health has never been harder due to the fact that you need over 20,000 command blocks to find the health of something from a range of 0-20.