Pass Multiple Variables to lessc Command Line Arguments

In order to pass more than one argument to the lessc compiler you need to use the option argument for each variable, for example

lessc --modify-var="bgColor=purple" --modify-var="bodyColor=aqua" custom.less test.css

Notice the “–modify-var” option being passed twice, this is because there is no separator

https://github.com/less/less.js/issues/731#issuecomment-28477515