Changing priority of a Post Process Component via blueprints

I am trying to change priorities of two Post Process Components via blueprints, using the Set Priority node for that. Despite the fact that the displayed value (by printing the value of Get Priority node) is changing, actual rendering order of the two post-process components is always the same. Does priority setting require some additional actions?

Also, I’ve found that I don’t quite understand how the priority property works. I’ve created the topic on the forum.