Hello, We are implementing growthbook with nuxtjs. We encounter problem of how to switch between variations. It seems that 
growthbook.forceVariation
 does not work. Is there some other way to force variation?
When initializing the feature information is:
{
  "value": true,
  "on": true,
  "off": false,
  "source": "experiment",
  "ruleId": "",
  "experiment": {
    "variations": [
      true,
      false
    ],
    "key": "webtest-feature",
    "weights": [
      0.5,
      0.5
    ],
    "hashAttribute": "session_id"
  },
  "experimentResult": {
    "inExperiment": true,
    "variationId": 0,
    "value": true,
    "hashAttribute": "session_id",
    "hashValue": "45274132-7196-4e23-8f8c-ceece9fc9d16"
  }
}
After 
growthbook.forceVariation('webtest-feature', 1)
 it seems to be:
{
  "value": true,
  "on": true,
  "off": false,
  "source": "defaultValue",
  "ruleId": ""
}