Objective: Let the workflow make a simple yes or no decision based on a random number and label the result.

• Nodes Used: When clicking "Execute Workflow" → Generate Random Number → Is Value > 0.5? → True Path / False Path
• Concept: Boolean logic with an If node and simple labelling on each branch.
• Exercise Steps:
  • [ ] Create a new workflow named Lab 2 - Decision Maker.
  • [ ] Add a Manual Trigger node and rename it to When clicking "Execute Workflow".
  • [ ] Add a Code node called Generate Random Number and set the code to return { json: { value: Math.random() } };.
  • [ ] Add an If node called Is Value > 0.5? and check if value is larger than 0.5.
  • [ ] On the true output add a Set node called True Path and set Result to High Number (True).
  • [ ] On the false output add a Set node called False Path and set Result to Low Number (False).
  • [ ] Execute the workflow several times and watch items sometimes go to True Path and sometimes to False Path, checking the value and Result fields each time.

Lab 2 n8n Workflow

{
  "nodes": [
    {
      "parameters": {},
      "id": "bef95d9c-39e8-485f-ad32-aadde977214d",
      "name": "When clicking \\"Execute Workflow\\"",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        -416,
        16
      ]
    },
    {
      "parameters": {
        "jsCode": "return { json: { value: Math.random() } };"
      },
      "id": "604f30a1-fe2d-420c-8754-a3bffbb0f9a3",
      "name": "Generate Random Number",
      "type": "n8n-nodes-base.code",
      "typeVersion": 1,
      "position": [
        -192,
        16
      ]
    },
    {
      "parameters": {
        "conditions": {
          "number": [
            {
              "value1": "={{ $json.value }}",
              "operation": "larger",
              "value2": 0.5
            }
          ]
        }
      },
      "id": "65ea504b-eb7f-410b-9d13-f1c08d60e8dd",
      "name": "Is Value > 0.5?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 1,
      "position": [
        32,
        16
      ]
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "true-val",
              "name": "Result",
              "value": "High Number (True)",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "id": "e425f0e1-d170-424f-9ed3-f94adead5ee4",
      "name": "True Path",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        272,
        -96
      ]
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "false-val",
              "name": "Result",
              "value": "Low Number (False)",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "id": "36928452-c019-45f6-beff-da935ae918de",
      "name": "False Path",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        272,
        112
      ]
    },
    {
      "parameters": {
        "content": "## Lab 2: Decision maker (conditional logic)\\n1. **Code Node** generates a random number between 0 and 1.\\n2. **If Node** checks: Is it bigger than 0.5?\\n3. Watch the **Green Line** flow to either the Top or Bottom path.",
        "height": 580,
        "width": 996,
        "color": 4
      },
      "id": "cf22472c-0288-41eb-8968-07e2c75b02f5",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -496,
        -256
      ],
      "name": "Instructions"
    }
  ],
  "connections": {
    "When clicking \\"Execute Workflow\\"": {
      "main": [
        [
          {
            "node": "Generate Random Number",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Generate Random Number": {
      "main": [
        [
          {
            "node": "Is Value > 0.5?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Is Value > 0.5?": {
      "main": [
        [
          {
            "node": "True Path",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "False Path",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "pinData": {},
  "meta": {
    "instanceId": "82cc682d3f33add4f11a78e1f29750bf4ba4e425478ba4b17330f9bf15960ec6"
  }
}