COT formula Data for MT4

Hi at all community i read a very nice article for create a COT babypips_com/learn/forex/your-very-own-cot-indicator
i try to do that , i just extract a data and download a historical data COT and rank the result , but , when i arrive here
"1. Assign a value of 100 to the largest number and 0 to the smallest figure.
And now we have a COT indicator!

i use this formula COTdata = (100 – (100 / (1 + RS))) , where RS is equal Difference = Net position of Large Speculators – Net position of Commercials, ranked , but the result is included 101 to 99 o_O why ?? anybody can help me ? for understund where is my mistake ?? tankz at all , i attach fotoCotRank