passing an argument into mayabatch python command

set /p VAR=User input

for /r . %%a in (*.ma) do ( 
        mayabatch -file %%a -command "python(""import script"" + ""\n"" + ""script.main(%VAR%)"")" 
)

I'm writing a bat file to run maya batch to process a bunch of files. I need to run python code passing in an argument %VAR% How would I go about doing this?