wrun:
Can I use without text string (put IR code to URL):
e.print("CH-");
I wouldn't have thought so. You'd be calling e.print() with an argument consisting of the string "CH-". I wouldn't be optimistic about the chances of the compiler finding enough implicit conversions and operators to add that lot together to produce a string. If you want to include a variable value within your string, you could either sprintf() the whole expression into a string, or simply print out the separate parts of the string in separate calls to e.print().