---
title: "Fax_ChangeFaxFilterValue"
method: POST
path: "/Fax_ChangeFaxFilterValue/{RespEnc}"
tags: ["Utility", "Core"]
---

# Fax_ChangeFaxFilterValue

`POST /Fax_ChangeFaxFilterValue/{RespEnc}`

## Request

- Base URL: `https://api2.westfax.com/Polka.Api/REST`
- URL: `https://api2.westfax.com/Polka.Api/REST/Fax_ChangeFaxFilterValue/{RespEnc}`
- Auth: none declared

# Changes the filter value of the Fax(s) identified. 
Useful to reset the read status of a fax or to delete a fax.

Filter Values can be:

None (reset - marked as unread),
Retrieved (Marked as Read),
Removed (Deleted)

## Path parameters

- `RespEnc` string, required

## Request body `application/x-www-form-urlencoded`

- object
  - `Username` string, required: string username
  - `Password` string, required: string password
  - `Cookies` boolean
  - `ProductId` string, required: Guid Ex. 12345678-1234-1234-1234-123456789abc
  - `FaxIds1` string, required: Id of fax received from GetFaxIdentifiers - look at Pre-request Script Tab
  - `Filter` string, required: Can be None (reset - marked as unread), Retrieved (Marked as Read), Removed (Deleted)

## Response `200`

---

[API](https://skmtc.dev/westfax/apis/westfax-secure-fax-api.md) - [All operations](https://skmtc.dev/westfax/apis/westfax-secure-fax-api/llms.txt) - [OpenAPI document](https://skmtc.dev/westfax/apis/westfax-secure-fax-api/revisions/3d1f36438a08?raw)