Hyperlink to Other Active Workbook

Want to create a hyperlink to the next open workbook, first sheet. (name is different every time I run a macro)
This code works but for the sheet inside the current (first) workbook but not what Im looking for. I want it to link the first sheet in the next open workbook. I have another one open (second workbook) next to this one. Something with activewindow next ? The link has to be in the first sheet of first workbook.
Thanks!

3f.xlsm

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So far I have this:

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But its not working, something with subaddress I think cus its making the hyperlinks name: True - (filename)

I tried that to set the second workbook but I think i could delete that line. Shame it doesnt support it, my second code almost worked, showed the path and all, just couldnt open it. Guess I need to copy paste.

I want the hyperlink in A1 in wb1, how do I fill that in here? Cus now its showing the hyperlink in wb2, A1. For the rest this one seems to be working, just wrong wb
If I delete the activatenext, then its showing the hyperlink in wb1, a1, with the link to wb1. Its gotta be hyperlink in wb1, a1, linked to wb2.

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Hmm didnt work, I get wb1 name in wb1, a1. I tried this and this works, switching with windows twice:
Thanks anyways! +rep

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