How to set `Mongo decimal` on Schema in `MeteorJS`?

I would like to set Mongo Decimal directly on Schema in Meteor JS. Please help me.

[thearabbit]

Sorry for late.

// work
valDecimal: {
    type: Decimal,
    blackbox: true
  },
-------------
// Don't work
valDecimal: {
    type: Decimal,
  },

[logvik]

One moment yet. Need to add for Decimal, to discard the deep validation

    blackbox: true

e.g.

 valDecimal: {
    type: Decimal,
    blackbox: true
  },