I was able to improve my previous gravity slider to have a single dot move in the X and Y directions.
First I used the Logic Maker to map the x and y accelerometer values from the IMU Block to the locations on the LED matrix. The mapped values were then parsed to make them into integers, which were then fed through the JSON gate to be sent to the Script Virtual Block.
Within the Script Virtual Block I created a function that takes the X,Y coordinates given from the IMU Block Logic Maker. It converts the row(X) and column(Y) values to a position in the continuous 1*64 array that makes up the LED matrix.
When the recipe is applied you get a little led rolling around the matrix depending on how you hold the blocks.