How in the project to make scss compiled along the path based on the project name?

Question

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I have now created a Build System for scss, which saves in the path relative to the project: /project/assets/project1/css/
But every time I change the project, I have to change the path, for example: project2. Yes, and it’s inconvenient to go there
. How can I make it so that in the project settings, for example, in "build_systems":order to set the path there using a variable, for example /project/assets/$project_name/css/ ?