Feeding 5:3 Sugar Syrup in a chicken feeder

I was so happy to get a visit from a local Top Bar Hive Beekeeper :) Patrick is only 11km away from where i study. He tried feeding his bees this way so I decided to give it a go. You see I dont mind feeding sugar when absolutelly necessery but the fact that one must open the hive to refill the empty jar gives me a headacke so to speak :)
It is of great benefit to the bees to keep Their Hive Body closed and open it as little as possible to contain the hive atmosphere. After mixing 2 kg of sugar into 12dl of boiling water, i poured the cooled down syrup into a chicken feeder which I placed in the vacinity of the two hives. I placed another bucket above the feeder in case of rain. I made sure to lift one side of the bucket so bees can get under it. I made sure to place dry grass into the feeder tray so bees dont drown. Lets see how this goes and if its gonna trigger robbing.