# How to get create a Post request body from a dynamic mappable parameters?

**URL:** <https://community.make.com/t/how-to-get-create-a-post-request-body-from-a-dynamic-mappable-parameters/86112>\
**Category:** Questions\
**Tags:** api\
**Created:** [July 2, 2025, 10:46am UTC](https://community.make.com/t/how-to-get-create-a-post-request-body-from-a-dynamic-mappable-parameters/86112 "2025-07-02T10:46:30Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Omraj\_Pradhan](https://avatars.discourse-cdn.com/v4/letter/o/e36b37/32.png) [@Omraj\_Pradhan](https://community.make.com/u/Omraj_Pradhan)\
**Post date:** [July 2, 2025, 10:46am UTC](https://community.make.com/t/how-to-get-create-a-post-request-body-from-a-dynamic-mappable-parameters/86112/1 "2025-07-02T10:46:30Z")

</div>

I need help to get dynamic mappable parameters name and value to create a request body for “POST” request.  
Here below is my rpc function response.

```auto
[
  {
    "name": "attributes",
    "label": "Attributes",
    "type": "collection",
    "spec": [
      {
        "name": 102,
        "label": "Description",
        "attributeId": 102,
        "required": false,
        "type": "text"
      },
      {
        "name": 104,
        "label": "Version",
        "attributeId": 104,
        "required": false,
        "type": "number"
      },
      {
        "name": 105,
        "label": "Feedback",
        "attributeId": 105,
        "required": false,
        "type": "text"
      }
    ]
  }
]

```

Below I have mappable parameters code

```auto
[
	{
		"name": "objectTypeId",
		"label": "Object Type",
		"required": true,
		"type": "select",
		"options": {
			"store": "rpc://getObjectTypeTags",
			"nested": [
				{
					"name": "objectId",
					"label": "Object Id",
					"required": true,
					"type": "number"
				},

				"rpc://getFields"
			]
		}
	}
]

```

Here i have communication code:

```auto
{
	// Request to API endpoint with parameter "id" defined in Mappable parameters.
	"url": "/Objects/data",
	"method": "POST",
	"headers": {},
	"qs": {},
	"body": [
		{
			"idAttribute": "{{parameters.attributes.attributeId}}",
			"idObject": "{{parameters.objectId}}",
			"value": "{{parameters.attributes.name}}"
		}
	],
	"response": {
		"output": "{{body}}"
	}
}

```

I need to form the request body for the POST api as given below

```auto
[
  {
    "idAttribute": 0,
    "idObject": 0,
    "value": "string"
  }
]

```

Output from the module while executing POST request.

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/make/original/3X/5/f/5f37068bec28558d02b7b6d6e1daaa6ad615a52b.png)

Please help me, how can I create a request body for POST request.

Waiting for the response. 🙏

---

<div class="post-metadata">

**Author:** ![Omraj\_Pradhan](https://avatars.discourse-cdn.com/v4/letter/o/e36b37/32.png) [@Omraj\_Pradhan](https://community.make.com/u/Omraj_Pradhan)\
**Post date:** [July 9, 2025, 8:53am UTC](https://community.make.com/t/how-to-get-create-a-post-request-body-from-a-dynamic-mappable-parameters/86112/2 "2025-07-09T08:53:06Z")

</div>

Hi Guys, May I know how to resolve this issue.  
I have found similar question in the community but it has no solution.  
[https://community.make.com/t/how-to-get-create-a-post-request-body-from-a-dynamic-mappable-parameters/86112](https://Link%20of%20the%20post)

Please Guys do respond to the question. It’s important.

#Custom Apps #api #communication #mappable-paramaters

---

<div class="post-metadata">

**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/make/original/1X/9786f7887a39f4a0fef4d09346ab5b54ce20222b.svg) [@system](https://community.make.com/u/system)\
**Post date:** [August 8, 2025, 8:53am UTC](https://community.make.com/t/how-to-get-create-a-post-request-body-from-a-dynamic-mappable-parameters/86112/3 "2025-08-08T08:53:26Z")

</div>

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.