Statsprocessor specific characters

[Crapcathash]

Hello i want to generate all combinations with this "Hello123" 8 length.

I have one upper "H" and lower "ello" with number "123"

I don't want to use ?l or ?d because it will use all alphabet & numbers

I've trying 

Code:

sp64.exe --pw-min=8 --pw-max=8 --output-file=allcombinations.txt --custom-charset1=Hello123

It is possible with this tool ? thank you