Invalid input for 'toRecipients' [item 0]

Questions
1

Describe the problem/error/question

I´m trying to pass some values to another workflow with Call n8n Workflow Tool, but when I include an email address in a string variable toRecipients, it gives me this error:

            **Invalid input for 'toRecipients' [item 0]**

What is the error message (if any)?

            **Invalid input for 'toRecipients' [item 0]**

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

{
  "nodes": [
    {
      "parameters": {
        "workflowId": {
          "__rl": true,
          "value": "Onu8WKS3lhnESXlU",
          "mode": "list",
          "cachedResultName": "CAV SEND"
        },
        "workflowInputs": {
          "mappingMode": "defineBelow",
          "value": {
            "Subject": "={{ $fromAI('Subject', ``, 'string') }}",
            "Description": "={{ $fromAI('Description', ``, 'string') }}",
            "FileToSend": "={{ $fromAI('FileToSend', ``, 'string') }}",
            "toRecipients": "={{ $fromAI('toRecipients', ``, 'string') }}"
          },
          "matchingColumns": [
            "email"
          ],
          "schema": [
            {
              "id": "toRecipients",
              "displayName": "toRecipients",
              "required": false,
              "defaultMatch": false,
              "display": true,
              "canBeUsedToMatch": true,
              "type": "array",
              "removed": false
            },
            {
              "id": "Subject",
              "displayName": "Subject",
              "required": false,
              "defaultMatch": false,
              "display": true,
              "canBeUsedToMatch": true,
              "type": "string",
              "removed": false
            },
            {
              "id": "Description",
              "displayName": "Description",
              "required": false,
              "defaultMatch": false,
              "display": true,
              "canBeUsedToMatch": true,
              "type": "string",
              "removed": false
            },
            {
              "id": "FileToSend",
              "displayName": "FileToSend",
              "required": false,
              "defaultMatch": false,
              "display": true,
              "canBeUsedToMatch": true,
              "type": "string",
              "removed": false
            }
          ],
          "attemptToConvertTypes": false,
          "convertFieldsToString": false
        }
      },
      "type": "@n8n/n8n-nodes-langchain.toolWorkflow",
      "typeVersion": 2.2,
      "position": [
        2160,
        220
      ],
      "id": "d9069cf4-61eb-4717-9879-46c2ba9cc77a",
      "name": "Envia Correo"
    }
  ],
  "connections": {
    "Envia Correo": {
      "ai_tool": [
        []
      ]
    }
  },
  "pinData": {},
  "meta": {
    "templateCredsSetupCompleted": true,
    "instanceId": "d0d387a4afea5ff11a1d87f9f8e0e55545df3c270af9577077827397f764d502"
  }
}



## Share the output returned by the last node
<!-- If you need help with data transformations, please also share your expected output. -->

                **Invalid input for 'toRecipients' [item 0]**


## Information on your n8n setup
- **n8n version:**
`1.99.1 (Self Hosted)`
- 
- **Database (default: SQLite):**
- **n8n EXECUTIONS_PROCESS setting (default: own, main):**
- **Running n8n via (Docker, npm, n8n cloud, desktop app):**
- cloud, Docker server
- 
- **Operating system:**
Sequioia 15.5 (24F74) using Chrome
2

Right, looks like “ToReceipients” is a an array, not a string.

"schema": [
            {
              "id": "toRecipients",
              "displayName": "toRecipients",
              "required": false,
              "defaultMatch": false,
              "display": true,
              "canBeUsedToMatch": true,
              "type": "array",
              "removed": false
            },

So you’re going to want to pass that parameter(ToReceipients) as an array, not a string. For what it’s worth, I’m unable to paste your workflow into my instance. Did you copy and paste the canvas over?

3

can you screenshot the problem?

4

Thanks Andrew, I just had to convert variables to string before passing over. I appreciate your help.

5

Thanks cutecaarcode. I found the solution converting variables to string first