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Power Platform Community / Forums / Power Pages - Design & Build / How to pass parameters...
Power Pages - Design & Build
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How to pass parameters to a Power Automate cloud flow from Power Pages.

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Posted on by dgray304 180
Hello,
 
I created a flow from inside Power Pages (Setup->Flows).  I used the "When Power Pages calls a flow" trigger.
I created a text input named 'firstname'.
 
I use this safeAjax call to trigger the flow: 
  webapi.safeAjax({
  type: "POST",
  url: "/_api/cloudflow/v1.0/trigger/<flow guid>",
  contentType: "application/json",
  processData: false,
  data: JSON.stringify({ firstname : "Doug" }),
  success: function (response) {
    console.log("✅ Flow response:", response);
  },
  error: function (xhr) {
    console.error("❌ Flow failed:", xhr.responseText);
  }
});
But the body is always empty.
I placed a compose with triggerBody(), another with triggerBody()?['firstname'].  Nothing.
 
Ideas?
 
Thanks,
Doug
Categories:
General
I have the same question (0)
  • dgray304 Profile Picture
    dgray304 180 on at
    How to pass parameters to a Power Automate cloud flow from Power Pages.
    Fubar,
     
    Thanks, that did the trick.  
     
    Much obliged,
    Doug
     
    Note:  I took a look at the peek code of the 'When Power ... ' trigger, the names are 'text' then 'text_1'.
    {
    "kind": "PowerPages",
    "inputs": {
        "schema": {
            "type": "object",
            "properties": {
                "text": {
                    "title": "firstname",
                    "type": "string",
                    "x-ms-dynamically-added": true,
                    "description": "Please enter your input",
                    "x-ms-content-hint": "TEXT"
                },
                "text_1": {
                    "title": "lastname",
                    "type": "string",
                    "x-ms-dynamically-added": true,
                    "description": "Please enter your input",
                    "x-ms-content-hint": "TEXT"
                }
            },
            "required": [
                "text",
                "text_1"
            ]
        }
    },
    "metadata": {
        "operationMetadataId": "ee89bc11-76c1-48aa-a00e-6e06a2e4c8ac"
    }
}
     
     
     
  • Verified answer
    Fubar Profile Picture
    Fubar 8,131 Super User 2025 Season 2 on at
    How to pass parameters to a Power Automate cloud flow from Power Pages.
     
    You are missing the eventData element in the JSON.
     
    I use the following structure to create the payload:
    var data = {}; 				

data["FlowInputNameHere"] = "your value here";

var payload = {};
payload.eventData = JSON.stringify(data);
    and then your data line inside your SafeAjax     data: payload,
     
    The above is a variation of what is in the example in this link
     
     
    (also: FYI inside the Flow if you are manually working with the Inputs - rather than selecting them - they are not referenced by the Name you set but by a generic label, off the top of my head can't remember what it is but will be like text0, text1)

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