[OneDay]

it should be a string:

PHP код:

forward @OnPlayerRefreshScreen(playerid, interval, stage, const return_callback[]);
@OnPlayerRefreshScreen(playerid, interval, stage, const return_callback[]) { 


and:

PHP код:

SetTimerEx("@OnPlayerRefreshScreen", interval, false, "iiis", playerid, interval, stage+1, return_callback);