The next bid provides a count of controls. A=2 points and K=1
Any bid over 2 hearts requires a second bid from responder if there is any interference treat it as DOPO
2♥ - 0/1 Controls
2♠ - 2 Controls
2NT - 3 Controls
3♣ - 4 Controls
3♦ - 5 Controls
3♥ - 6 Controls