I want to control a paremeter in a system fam. via a shared parameter that only shows the text, when another shared parameter is active.

Let me explain in another way. On my curtain panels I want to have a Y/N my users can check if the glass should be safetyglass. This should show in the curtain panel tag as "S". More safe than having them type "S or s" imho.

My memory is either bad, or can't this be done?