Create an attriute or Change the representation of an "image attributes"

Hello,

i would like to create a new attribute (not a configurate column) that users will be able to use and that i will be able to change the condition behind this attribute if necessary.

As a user, i think I can only create image attribute which is what I want at the exception that we get an image an not a text...

In these conditions, i had the idea to create an image attribute and then to change his representation to have text instead of the picture but it doesn't seem to work.

 

Is it possible as a user to create attribute? Same thing as "Edit image attributes" but instead of having an image, i would like text.

If it's not possible, is it possible to change the representation of an image attribute to have text?

I've done this to get 'ok' when HasMemo is true  but it doesn't work, i still have only the image:

 

 

Many thanks by advanced.

Olivier