[Konstantinos]

Use strcat.

pawn Код:

new
    msg[ 500 ] // An example for a large dialog, change it to what you need
;

strcat( msg, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.... AAAAAAAAAAAAAAAAAAAAAAAAAAAAA" );
strcar( msg, "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB.... BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" );
strcar( msg, "CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC..... CCCCCCCCCCCCCCCCCCCCCCCCCCCCC" );

Imagine it as a large text, it was just an example!