[Konstantinos]

pawn Код:

// Global variable
new
    OnlineTimer[ MAX_PLAYERS ]
;

public OnPlayerConnect( playerid )
{
    OnlineTimer[ playerid ] = SetTimerEx( "Online", 60000, true, "i", playerid );
    return 1;
}

public OnPlayerDisconnect( playerid, reason )
{
    KillTimer( OnlineTimer[ playerid ] );
    return 1;
}

forward Online( playerid );
public Online( playerid )
{
    PlayerInfo[targetid][Minute] += 1;
    return 1;
}

@Mr_DjolE
- It's same.

pawn Код:

PlayerInfo[targetid][Minute] += 1;
// OR
PlayerInfo[targetid][Minute]++;
// OR
PlayerInfo[targetid][Minute] = PlayerInfo[targetid][Minute] + 1;

All these will add +1 on the variable.