Option variables in triggers

From what I can tell, it's not possible, but I want to double check before I give up on it. On a side note, it would be wonderful if this could work.

Essentially, I want to be able to create what I call "option variables" in triggers. I already know you can do something like:



with "object" being a single item. But what if I want to search for multiple objects? Even if I set my variable to:



it doesn't work, as it's looking for the entire string, rather than an option from the string.

If it's not possible, could this be included in a future version?

Change the variable to:



That stops the client "escaping" the special characters like | and then it will work.

i.e.

Absolutely wonderful. Thanks!