Entmake a Block using variable for name

Does anyone know how to make a block using the entmake command, but rather than explicitly entering it eg.(entmake '((0 . "BLOCK")(2 . "BLOCK_NAME")(10 0.0 0.0 0.0).. I would like to use a variable for the block name. I've tried CONS but it didn't seem to work.Any help would be greatly appreciated.Sean