[Zh3r0]

This is a better code!

pawn Код:

if(!response)
{
    if ( PlayerInfo[ playerid ][ pCitizen ] == 0 )ShowPlayerDialog ( playerid, 6, DIALOG_STYLE_INPUT, "Citizenship Information","How Old Are You?", "Send", "Cancel" );
    else SendClientMessage(playerid, COLOR_RED, "You Are Already A Citizen");
}

Try and concentrate whatever you do!