This question does not make sense because communism (for Marx) is not something to be invented or created.

Here is a quote from Marx of his Notes on Adolph Wagner's “Lehrbuch der politischen Ökonomie” (Second Edition), Volume I, 1879:

  According to Mr. Wagner, Marx's theory of value is the cornerstone of his socialist system” (p. 45).  Since I have never established a “socialist system,” this is a fantasy of Wagner