Token Units

1 meey = 1 10^9 mgas = 1 10^18 gas

Note that amounts in the base unit gas exceed the range of 64-bit integers. You need some implementation of Big Integer to deal with these numbers. Meey SDKs come bundled with a recommended way to do that. In most cases, you can just use strings instead of numbers. For example, when creating a JSON transaction, set

{
    "amount": "1000000000000000000"
}