FlowscopeDocs

S022

trigger argument does not match the alert payload

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Severity Error

An alert declared with payload: T must be triggered with exactly one value of type T; an alert without a payload is triggered with no argument. The call here passes the wrong number of values.

Match the declaration: add the payload record, remove the stray argument, or change the declaration.

Failing example

Flowscope Script
script "Funding extreme"
data funding = subscribe(data.funding)
type FundingHit {
  rate: float
}
alert extreme = alert(title: "Extreme funding", payload: FundingHit)
on funding.close {
  let r = funding.rate ?? 0.0
  if math.abs(r) > 0.001 {
    extreme.trigger()
  }
}

Fixed example

Flowscope Script
script "Funding extreme"
data funding = subscribe(data.funding)
type FundingHit {
  rate: float
}
alert extreme = alert(title: "Extreme funding", payload: FundingHit)
on funding.close {
  let r = funding.rate ?? 0.0
  if math.abs(r) > 0.001 {
    extreme.trigger(FundingHit { rate: r })
  }
}