hi E54
It is better to be specific.
1. Read the string in Arduino
2 or the return value in B4R
Etc etc.
Also sometimes 2 line code snip will give us even better idea of what and how you did it.
OK I'll assume that you send the string setDo 1 1 with B4R to the arduino.
the arduino code must read ALL characters in the string before it 'parse' the line into variables. setDo, 1 and 1.
secondly it is not good programming practice to separate values with spaces as it could limit future features. We use the '~' as seperator because the chance of that in a 'sentence' is about NIL.
Adie