[-TmS]

I have this code to show altitude, but it shows veery long numbers, sometimes it shows negavite values, and i dont know how to make it show the Z (or altitude) in meters :

Код:

if(GetVehicleModel(plane) == 476)
	{
	GetVehicleVelocity(vehicleid,speed_x,speed_y,speed_z);
	format(alt_string,256,"Altitude: %i meters",speed_z);
	TextDrawSetString(altitude[playerid], alt_string);
	}
	else
	{
		TextDrawSetString(altitude[playerid], " ");
	}

Do i need to divide it by a specific value ?