为visual studio创建多项目模板时，有没有办法在根模板文件中使用参数？

I am trying to create a multi project template. I wish the sub projects names to contain the solution name. I have tried the following however $safeprojectName$ doesn't work in the root template for some reason. It tries to create the folders with $safeprojectName$ in the name rather than the actual project name.I am trying to create a multi project template.