Variable moving average and VIDYA

Hi,

I would like to understand the difference between variable and vidya moving average. most of the places i understand that vidya is VMA but it is not. can someone share the difference and the formula calculated for VMA

no one is there in this forum to address my issue
can someone help me AFL

If you need help in AFL, better you can try at https://www.traderji.com/community/
You won’t get any help here for AFL coding.