[Konstantinos]

pawn Код:

if(tShow[playerid]==0)
{
    tShow[playerid]=1;
    ShowPlayerDialog(playerid,DIALOG_CARDCHECK,DIALOG_STYLE_INPUT,""COL_SPLAVA"Cloud-Banka:"COL_BIJELA"Transfer","Upisite kod kartice igraca:","OK","Cancel");
}

It will only show the dialog if tShow for that player is 0. If for any reason such as not responding (ESC) or error returned, the variable is not reset back to 0 in those two dialogs and it will never show the dialog again.