Need some examples using Lookup( I'm playing with led matrix sample code)

[HenrikOlsson]

That's correct. You can not use LOOKUP with arrays since LOOKUP accesses static data stored in flash and not in RAM where your array is.

i VAR Byte
myByte VAR Byte
For i = 0 to 15
  Lookup i, ["This is 16 bytes"], myByte   ' When you do this the string is stored in flash.
  Serout myByte
NEXT

In the above code the string This is 16 bytes is static, stored in program memory and can not be changed at runtime. If accessing arrays (ie data in RAM) you can get the same result by doing something like:

i Var Byte
myArray VAR BYTE[16]
ArrayWrite myArray, ["This is 16 bytes"]   ' When you do this the string is stored in RAM
For i = 0 to 15
   Serout myArray[i]
NEXT

/Henrik.