Matches regex pattern

Input

value

Validate that value matches pattern '^HELLO'

validation:

stringMatchesRegex

Ensure string field matches regex pattern

source:value

parameters

pattern

Regex pattern to match

Output

result
Pass
Pass
Pass
String field "value" does not match regex pattern "^HELLO"
String field "value" does not match regex pattern "^HELLO"
String field "value" does not match regex pattern "^HELLO"

* Sample inputs run locally in your browser using the same operation logic as Fontana Flow.
Results are illustrative, not connected to a workflow.

Ensure string field matches regex pattern.

Parameters

• pattern (string, required) — Regex pattern to match. Default: "".

Field selection

• params.source — Field whose values this operation reads. Use a single field name, a comma-separated list of plain field paths (cash_flow_type, currency) from the multi-select UI, or a regex via Pattern mode. Omit to apply to all fields on the row.
• params.target — Optional output field. When omitted, the source field is updated in place. Hidden when more than one named source field is selected.

JSON Configuration

{
  "id": "op-stringMatchesRegex",
  "kind": "validation:stringMatchesRegex",
  "params": {
    "pattern": "^HELLO"
  }
}

Related

• required