[Youice]

You missed,

it's

PHP код:

format(TXT_DialogLoginMsg, sizeof(TXT_DialogLoginMsg), "Welcome{ffff00}%s", Rname);
ShowPlayerDialog(playerid, DialogLogin, DIALOG_STYLE_INPUT, TXT_DialogLoginTitle,  TXT_DialogLoginMsg, TXT_DialogLoginButton1, TXT_DialogButtonCancel);