Change Document Create Date With Rest API

Hi,

I'm trying to change document's Create Date value with the api/v2/nodes/{id}/systemattributes PUT request.

Here is the documentation :

https://developer.opentext.com/ce/products/extendedecm/apis/contentserver222restapi

I try to set it to 2020-01-01 and this is the response that I get :

It seems that it only returns the info and not even changing the create_date field. What am I doing wrong? is it even possible? by the documentation it is possible but it doesn't work. Any ideas?

Thanks.