# \[Solved\] Creating a cloudinary signature for API POST call **URL:** \ **Category:** Questions about Thunkable X\ **Tags:** cloudinary, solved, webapi\ **Created:** [December 29, 2020, 7:40am UTC](https://community.thunkable.com/t/solved-creating-a-cloudinary-signature-for-api-post-call/1041893 "2020-12-29T07:40:33Z")\ **Posts on this page:** 2\ **Page:** 3
**Author:** ![whiterabbitstudio202](https://avatars.discourse-cdn.com/v4/letter/w/8dc957/32.png) [@whiterabbitstudio202](https://community.thunkable.com/u/whiterabbitstudio202)\ **Post date:** [April 16, 2023, 12:55pm UTC](https://community.thunkable.com/t/solved-creating-a-cloudinary-signature-for-api-post-call/1041893/41 "2023-04-16T12:55:25Z")
I’m joining this thread with a question. I am trying to change a cloud file. As far as I know you need parameters “from\_public\_id” “to\_public\_id” and signature and timestamp with key. Unfortunate error in generating the signature. It generates a key using this API [https://api.hashify.net/hash/sha1/hex](https://api.hashify.net/hash/sha1/hex) and giving the parameters: from\_public\_id=12345678&to\_public\_id=123×tamp=“timestamp+key”. This method works fine with file upload. The file is uploaded to the cloud, but I still want to rename it and there is a problem in the signature. ![for1](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/f/c/fc8b47e16c0198258c26456988a2758269f2a23d.jpeg) ![Screenshot_2023-04-16-14-47-31-91_2bbfbfee96a5dfce998f962ebb8b5da3](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/2/a/2a1d8d6e548499787bb8b79cfd23fd656f1345e7.jpeg) ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 12:19pm UTC](https://community.thunkable.com/t/solved-creating-a-cloudinary-signature-for-api-post-call/1041893/42 "2024-11-08T12:19:21Z")
Closed on November 8, 2024, 12:19pm UTC [Previous page](https://community.thunkable.com/t/solved-creating-a-cloudinary-signature-for-api-post-call/1041893.md?page=2)