Userdefined Attribute as Link

Hello Community,

Do anybody know if there is a posibility / documentation how to define a user attribute in platform at VPLMReference as a Link?

Currently I defined it as string where the Link is typed in as text. This text have to be copied by user and paste to a browser which is user unfriendly. Any Idea or hint is warm welcome.

the background is a huge amount of documents are stored in an external server. It shall be easiely connected within the 3D Product structure. (Document management is presented but postboned by customer due to the high amount of tasks in 3D migration, maybe it will be done in further) Thank you.