home button flex cable ipad 4

I have a small problem with repairing the Ipad 4, model A1458 and I hope one of you can support me.By heating up the glue and pulling the digitizer out of his frame I saw an broken flex cable. So after the digitizer was off, I saw an flex cable between the mainbord and "I guess home button or bracket". This cable is broken, so I believe the home button will not work anymore.

I'm searching now for an solution but I can't find an supplier who can deliver such cable including home button.

Does someone has experience with this or can someone tell me how to solve this problem?

Many thanks for the efforts in advance.