Upper and Lower case on a known password

[Saduj]

I know the password I used and it contains Upper and lowercase letters as well as numbers. What i'd like to do is have hashcat randomly change the upper and lower of the letters only, so it will figure out my password correctly. I've tried using this rule that i've created (which is below) new to hashcat and not sure where to go, thanks in advance for the help here's an example of my password  O9ecvffF51&8djRjJo

rule I've created

u
l