Easy question about Character manipulation

["mark" <mkazmierski@gmail.com>]

Hello,

I am quite newbie to ada. I have declared something like that:
size: Integer := 9;
emptySpaces : array (0..size) of Character := "0123456789";
textLine : array (0..size * 3) of Character;

Now I would like to have the possibility to initialize textLine 
variable, but when I write:
textLine := "9876543210" & emptySpaces & "9876543210";

I got an error 'expected type of textLine' ,'found type od 
emptySpacs...'. I know it is connected with very deep contstaint 
checks but have no idea how I could avoid that. Could you tell me how 
can I make it work?!?

Thank you very much, Mark