contract size calculator on topstepx

i would like to vote for a CONTRACT SIZE CALCULATOR in topstepX. This is in a form of two horizontal lines . The first line is the MarketPrice / Limit price and the second line is the SL line. based from this lines the contract size are calculated based on the $RISK or % RISK set by the trader. this would be a good tool to be able for trader to have a consistent RISK to mitigate big losses at the same time to capitalized on the good trades.