Is your feature request related to a problem? Please describe.
I am trying to use the Pre-Request Script to dynamically set or inject new variables into my GraphQL request.
However, the newly added item is not included in the final request.

let variables = JSON.parse(altair.data.variables)
variables = {
    ...variables,
    ts: 1234567890,
  sign: "xxxxxxx"
}
altair.data.variables = JSON.stringify(variables)