How to control power of a nibe heat pump


I have indoor unit vvm320 and my oudoor unit is F2120. Resently I added my old 2,5 m3 electric hot water heater to the system as a reservoir so I could heat more water, when the electricity is cheap or my solar is producing extra power. I am controlling the reservoir valves with esphome and it is working great.

My problem is, that I can’t figure out a way to turn my heat pumps power up, when I would heat up the reservoir. I have about 1000 entities for the heat pump, but no entities seems to do this

Have any of figured out a clever way to do this?