consume item function

Private Function ConsumeItem(ByVal argPartyslot As Integer, ByVal argInventoryIndex As Integer) As Boolean 'using atk for hp and magic for mp to save on space.
        If argPartyslot >= 0 And argPartyslot <= 3 Then
            If Inventory(argInventoryIndex).index > 0 Then
                If Inventory(argInventoryIndex).consumable Then
                    If Party(argPartyslot).dead Then
                        If Inventory(argInventoryIndex).handed2 Then
                            If InsertItemInToInventory(Inventory(argInventoryIndex).index, -1) Then
                                Party(argPartyslot).dead = False
                                Party(argPartyslot).hp += Inventory(argInventoryIndex).atk
                                Party(argPartyslot).mp += Inventory(argInventoryIndex).magic
                                Return True
                            Else
                                Return False
                            End If

                        Else
                            Return False
                        End If
                    Else
                        If Inventory(argInventoryIndex).atk > 0 Then
                            If Party(argPartyslot).hp < Party(argPartyslot).maxhp Then
                                If InsertItemInToInventory(Inventory(argInventoryIndex).index, -1) Then
                                    Party(argPartyslot).hp += Inventory(argInventoryIndex).atk
                                    Return True
                                Else
                                    Return False
                                End If
                            Else
                                Return False
                            End If

                        Else
                            If Party(argPartyslot).mp < Party(argPartyslot).maxmp Then
                                If InsertItemInToInventory(Inventory(argInventoryIndex).index, -1) Then
                                    Party(argPartyslot).mp += Inventory(argInventoryIndex).magic
                                    Return True
                                Else
                                    Return False
                                End If

                            Else
                                Return False
                            End If
                        End If
                    End If
                Else
                    Return False
                End If
            Else
                Return False
            End If
        Else
            Return False
        End If
    End Function