But i will also put text at Row two, but whatever i try , this text will scroll either.
That's what the scrollDisplayLeft() and scrollDisplayRight() methods do.
You want to emulate scrolling, by changing the message shown on line 1 each time through loop.
Show like so
Arduino is great
rduino is great A
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It isn't that difficult to shift the array around. Even better, though, is to simply print two different parts of the one array each time. First, print 0 to n of the array and nothing. Then, print 1 to n and 0. Then 2 to n and 0 to 1. Then, 3 to n and 0 to 2. Keep this up until you are printing n and 0 to n-1. Next time, you start over.
Get rid of the unnecessary curly braces in loop.