Maximum length

Input

value

Validate that value has at most 10 characters

validation:

maxLength

Ensure string does not exceed maximum length

source:value

parameters

maxLength

Maximum length allowed

Output

result
maxLength validation failed: hello world exceeds maximum length of 10
Pass
Pass
maxLength validation failed: HELLO WORLD exceeds maximum length of 10
Pass
maxLength validation failed: invalid value exceeds maximum length of 10

* 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 does not exceed maximum length.

Parameters

• maxLength (Maximum Length, number, required) — Maximum length allowed. Examples: 10, 50, 100, 255.

Field selection

• source — Field whose values this operation reads. Omit to apply to all fields on the row.
• target — Optional output field. When omitted, the source field is updated in place.

JSON Configuration

{
  "id": "op-maxLength",
  "type": "validation",
  "action": "maxLength",
  "params": {
    "maxLength": 10
  },
  "testInputs": [
    "hello world",
    "valid row",
    "good value",
    "HELLO WORLD",
    "bad row",
    "invalid value"
  ]
}