[1.7.10] [SOLVED] entity equipment rendering error help

so i have made a mob that picks up items and stores them in an ItemStack array called equipment

but when the mob picks up a block it does not render it in the mobs hand can somebody help me

the same happens for armor when it picks up armor the mob has the armor and its health is scaled up depending on what the armor is and how much it protects you but it doesn't render and when the mob dies the items in the array are dropped so they are being stored but not rendered any help

note that the Itemstack array is the default equipment array in EntityLiving

My mobs code

package com.dogz.mods.Players.Entity;

import com.dogz.mods.Players.Helper.EntityHelper;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.effect.EntityLightningBolt;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.monster.EntityZombie;
import net.minecraft.init.Items;
import net.minecraft.item.ItemArmor;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;

public class EntityPlayerExtendable extends EntityLiving
{
public EntityPlayerExtendable(World world)
{
	super(world);

	setCanPickUpLoot(true); //makes it so the mob can pick up items
}

        //called when the mob picks up a item
@Override public void onItemPickup(Entity entity, int stackSize) 
{
	super.onItemPickup(entity, stackSize);

	if(!(worldObj.isRemote))
	{
		if(entity instanceof EntityItem) //makes sure it is item (fixes crashes)
		{
			EntityItem entityItem = (EntityItem) entity;
			ItemStack stack = entityItem.getEntityItem();
                                
                                //make our mob wear skulls
			if(stack.getItem() == Items.skull) setCurrentItemOrArmor(1, stack);
                                //make our mob wear armor
			else if(stack.getItem() instanceof ItemArmor)
			{
				ItemArmor armor = (ItemArmor) stack.getItem();
				setCurrentItemOrArmor(armor.armorType + 1, stack);
			}
                                //make our mob wield the item
			else setCurrentItemOrArmor(0, stack);
		}
	}
}
}

SOLUTION: made my custom renderer extend RenderBiped not RenderLiving