Dynamically name commands in vimscript

I'm trying to dynamically create functions and commands that point to those functions. e.g. I have a directory:
modules/abc
modules/xyz

I want commands Abc and Xyz that point to functions Abc() and Xyz(). It appears I'm able to generate the function names dynamically, but I'm unable to create the command names dynamically. With the following, I get an error: E182 Invalid command name

let s:modules = split(glob("modules/*"))

for s:module in s:modules
let s:module_name = split(s:module, "/")[-1]
let s:prefix = toupper(s:module_name[0]) . s:module_name[1:]

function! {s:prefix}()
echo "inside " . s:prefix
endfunction
command! {s:prefix} call {s:prefix}()
endfor

I've tried with no luck:
command! s:prefix call {s:prefix}()
command! prefix call {s:prefix}()

What am I missing? Does anyone know how to do this in vimscript if it's possible?

Thanks,
Jim

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