remainingTime -= Time.fixedDeltaTime;
    if (remainingTime < 0 ) {
        remainingTime += Time.fixedDeltaTime;
        DoSpawnObject();
    }

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class InventoryManager : MonoBehaviour
{

    public Rigidbody Cube;
    public Rigidbody RectangularPrism;
    public Rigidbody TriangularPrism;
    public Rigidbody Cone;
    public Rigidbody Tourus;
    public Rigidbody Token;

    public int CubesAmount;
    public int RectangularPrismsAmount;
    public int TriangularPrismsAmount;
    public int ConesAmount;
    public int TourusesAmount;

    public Text CubesAmountCountText;

using UnityEngine;
using System.Collections;

public class PickUpSystem : MonoBehaviour
{

    public int ShapeValue1; //Value of shape.
    public int ShapeValue2;
    public int ShapeValue3;
    public int ShapeValue4;
    public int ShapeValue5;

    public int ShapeValue1Uses; //Amount of uses before it will disappear.
    public int ShapeValue2Uses;
    public int ShapeValue3Uses;
    public int ShapeValue4Uses;
    public int ShapeValue5Uses;

    private int oldShapeValue1;
    private int oldShapeValue2;