[Jochemd]

Well, if you have written the owners name into a variable, you can do it this way (this would be for 'house 1'

pawn Код:

if(!strcmp("/opengate", cmdtext, true))
    {
        if(!strcmp(Ownername[House1],Playername,true))
        {
            SetTimer("OnGateMoveBack",4000,false); // setting a timer to move the gate back
            MoveObject(blablabla); // Put your info here to move the gate to
            MoveGateBack[playerid] = 1; // Do not forget to define this.
        }
        return 1;
    }

pawn Код:

forward OnGateMoveBack();
public OnGateMoveBack()
{
    if(MoveGateBack[playerid] == 1)
    {
        MoveObject(blabla); // move the object back
        MoveGateBack[playerid] = 0;
    }
    return 1;
}

Please note that I have not done something good now by writing almost the whole code. try making it yourself next time and learn these function, and the 'Related Functions'. They're really useful.