Can't get echo to produce two lines of text
 

i am trying to write a script that will control my lcd brightness of my screen and i am using the echo command to write the new settings to file. One problem though is i can't seem to get two or more lines from the echo command, even when i use the -e option, please help.

Some examples:
echo -e first line \n second line -> frist line n second line
echo -e first line \r second line -> frist line r second line

Thank you
Frank

Like this:
echo -e First line'\n'second > file.txt

or

echo first line > file.txt
echo second line >> file.txt