Why isn't hide/unhide working?

Hello, I have a problem for my dynamo.
I wanna making to hide/unhide dynamo when I note some of line or text.

So, I made that which is below.

Why can’t it run?
Actually, ‘Text note hide’ is good, but others(text note unhide, line style hide/unhide…) are not good.

Dizzy node, sorry. I don’t know because it hasn’t been long since I’ve used it.

Hi @didi and welcome to the forum :wink: where do hideelement node comes from ?..i guess when you views categori and all element of categori you get all views include projectbrowser and probably some null as well…could it work if you sort out these views…and be sure you feed in the line element on not the graphicstyle…

Revit_dy0LKp8pFq

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