To display a custom field depending of the ACL of the item

Hello !

Is it possible to display the content of a custom field (radio image) depending of the access level of the item?

In my situation, I need to display this image only if the item (article) is not accessible for this or this group of users. So I can't use the access level of my custom field, because it's based on the ACL of the user who is viewing, not the item itself.

I thought to use in the custom field the prefix/suffix params with php test, but I don't know exactly how I must write my test.
Can you help me?

Thanks by advance.

you can use a content context plugin like regulard context

can't find it, do you have a link please ?

www.regularlabs.com/extensions/conditionalcontent

I Didn't know this plugin, it looks great!
Many thanks

with plaisure