ansible template vars for command line invocation

[Ed Greenberg]

Hi, I have a bash command of:

ansible beta -m template -a 'src=../templates/www.conf.j2 dest=/root/www.conf '

I need to specify a variable on the command line. 

I tried specifying it in the -a string, but got an error that template only accepts certain variables. 

IF the template was in a playbook I could provide the variable(s) using -e.  How can I do this from the command line invocation? 

Thanks, 

Ed 

[Roberto Paz]

Can you share the error message? Didn't work if you use as an "extra var" added to the command line you posted?