I have read the same how-to before. I believe it's the same how-to as the one that is on top of this forum. But somehow this pinning doesn't work here

This is the problem I have:
I've downloaded the source of xdaliclock v2.20-1. I compiled it and installed it. I've add a pin for xdaliclock version 2.20-1 with a priority 100. If I understand the how-to correctly, a pin priority of 100 means that the package is installed and will not be up or downgraded. But everytime apt-get tries to upgrade xdaliclock.

Am I doing something wrong here?