Pasting text will overwrite the clipboard, I copy the current memory to other clipboard first

[Pyxis]

but it fails in this macros : the %FrontBrowserURL% cannot be pasted if there is a clipboard copy before it.
strange huh ? it doesn't work for variable only ?

[tiffle]

You’re mistaking "Insert Text" action for putting something into the clipboard.

Your macro should look more like this:

Of course I don't have your 4K Video Downloader so I've just put in Finder as an illustration.

Personally, though, I'd probably use this version myself:

[noisneil]

There's a simpler way to return the previous clipboard item, which is to delete newest one.

Also, you're not copying the URL in the second action; you're pasting it.

URL to 4KVD.kmmacros (21 KB)

Macro screenshot

[noisneil]

Beat me to it.