AdvSmoothMessageDialog access violation

the text is AdvSmoothMessageDialog1->HTMLText->Text="                first row of text\r\n              second\r\nterza\r\n";

I'm trying to investigate when the maximumWidth is not respected because it happens sometime

This is the code
if( AdvSmoothMessageDialog1->HTMLText->Text != "" )
   AdvSmoothMessageDialog1->CloseDialog();
AdvSmoothMessageDialog1->Caption= titolo;
AdvSmoothMessageDialog1->HTMLText->Text= "                               riga 1\r\n           SECONDA RIGA\r\n";
AdvSmoothMessageDialog1->ExecuteDialog();

Thanks!