I wanted to use String extract variable but it uses 3 input StringExtract(Input,Startpos,Length) I used Addcaptured keys earlier as it had 2 inputs by adding a setparamater variable before it But how do i configure a variable with 3 variable? This is what i have set up, it gives me an empty variable as output https://gyazo.com/70e55061a5b94116609b3b51dcf0227d https://gyazo.com/b33b620fc19b69b2000281cb2ab11dff https://gyazo.com/5568e51be05927e968746281a01ac1f7 Also is there any way to use random numbers? I read about 'RandomNumber' but it says it only uses value from 0 to 1 in float! I would like to specify the string length, and specify whether to use characters or numbers! Is that possible? Thanks!