N        This expression returns the signed representation of the single byte at the cursor's position in the received binary message, reading as a signed 8-bit integer.


The value returned will be in the range -128 to 127, inclusive.

If the expression fails, the value returned will be 0.


In Blue, if you try to read at an invalid index, you will cause an error. When using this expression outside of a Message event, you will also get an error related to message being too small.


If reading was successful, the cursor will be incremented by 1.