BUG: RUN API, incorrect writing of variation line

[ahobeost]

Using the run api, the following line:
config.variations.add_variation("Ac", "AcollAp", [2, 3, 4, 6, 8, 10])
produces:
variation AcollAp 2 3 4 6 8 10

This should be:
variation Ac AcollAp 2 3 4 6 8 10