One issue is I am unable to do the auto calculation for calculating the BMI
@Varsha, we would appreciate it if you could split your issues into multiple posts if they are different (instead of having all the issues in the same post). As for now, I have split it for you. This should help the community to search for relevant topics.
Regarding your BMI issue, please feel free to go through this post discussed previously. It should help you solve your issue: