Numeric values will be sent to an EV3 bluetooth mailbox and can be used in the LEGO Mindstorms software: First 2D Coordinate - Mailbox x Second 2D Coordinate - Mailbox y 1D Coordinate - Mailbox z Buttons 1-4 - Mailbox w ABCD: Activate Mailbox a, b, c, d. WXYZ: Activate Mailbox w, x, y, z. Range of values for coordinates: -100.