when exactly Communist Party of Vietnam abandoned Marxism - Leninism? Any official statement claims that?

Does it really matter what official statements say if a country have stock exchange, group of billionares and market economy?

Iived there for quite some time to understand its likely less regulated and government controlled than many ex-USSR countries (im from russia).

Of course politically Vietnam is what it state it is compared to e.g Indonesia that I now explore. But economically it's the same capitalism as everywhere else.