Disable buffer overflow in json parameters

Hi

In a file upload using api we allow the file name in base64 encoding.

However this triggers the

Generic buffer overflow attempt 1

.

As of this post it seems signature at json parameter level cannot be disabled. https://devcentral.f5.com/questions/disable-attack-signature-on-particular-json-parametercomment77010

Has there been any change in this? I am using v12?

In my json content profile I do not see the buffer overflow sig at all on filtering with the name.