Thank you Dave for the quick response.

Unfortunatly I am not able to write the string in three lines neither in two lines, I get an error 346 Expected "]" but the "]" is there!

The actual string contains an underscore in the text "private_key" could it be the reason?

Fortunatly the whole string stay in one single line and the code compile, but I wonder why I cannot use the line extention.

Alberto