Appending Special Characters to flow

[aidan]

I have to sum two streams of ASCII data, 'STX'-'ASCII message'-'ETX' one of them has redundant data so I need to 'parse and pass' Should be easy, first two characters of 'ASCII message' are always 'M0' length is fixed, so i can manage to pull out wanted data all I then need is to prepend STX and append ETX Have spent about two hours trying below is my flow. Help appreciated.

[edje11]

Think there are various ways to do that, this is one of them.
Put it in a function node.

msg.payload = String.fromCharCode(0x02) + msg.payload + String.fromCharCode(0x03) + "\n\r"
return msg;

[aidan]

Thanks good solution - works just fine