Possible to make entities disappear?

[genmills]

Hello again!

I don't always like making a new thread when I have a question or two... but here it goes.

I need to make a painting disappear, because I want the painting to change to a new one. I have a function that sets the inactive painting to active. Something like:
SetEntityActive("painting2", true);

And I was trying to make the first painting disappear with the same function. Something like:
SetEntityActive("painting1", false);

Is there a reason this doesn't work for some objects, and if that's the case, is there an alternative method I can use for changing what painting is on the wall?

Sorry if this has been asked before, but when I use the search feature, like 100 threads come up unless I search with quotes, in which case no threads come up.

Thanks!