AMENDMENT NO. 3

                                                                Exhibit 8(C)(vi)

                                 AMENDMENT NO. 3

                             PARTICIPATION AGREEMENT

    The Participation Agreement (the "Agreement"), dated October 1, 2002, by and
among AIM Variable Insurance Funds, a Delaware trust ("AVIF"); Invesco Aim
Distributors, Inc., a Delaware corporation, CUNA Mutual Insurance Society, an
Iowa life insurance company, and CUNA Brokerage Services, Inc., is hereby
amended as follows:

    WHEREAS, effective April 30, 2010, AIM Variable Insurance Funds will be
renamed AIM Variable Insurance Funds (Invesco Variable Insurance Funds). All
references to AIM Variable Insurance Funds will hereby be deleted and replaced
with AIM Variable Insurance Funds (Invesco Variable Insurance Funds);

    WHEREAS, effective April 30, 2010, Invesco Aim Distributors, Inc. will be
renamed Invesco Distributors, Inc. All references to Invesco Aim Distributors,
Inc. will hereby be deleted and replaced with Invesco Distributors, Inc.

    Schedule A of the Agreement is hereby deleted in its entirety and replaced
with the following:

                                   SCHEDULE A

FUNDS AVAILABLE UNDER THE CONTRACTS
-----------------------------------

ALL SERIES I SHARES AND SERIES II SHARES OF AIM VARIABLE INSURANCE FUNDS
(INVESCO VARIABLE INSURANCE FUNDS)

ACCOUNTS UTILIZING THE FUNDS
----------------------------

ALL ACCOUNTS UTILIZING THE FUNDS

CONTRACTS FUNDED BY THE ACCOUNTS
--------------------------------

ALL CONTRACTS FUNDED BY THE ACCOUNTS

                                        1


All other terms and provisions of the Agreement not amended herein shall remain
in full force and effect.

Effective date: April 30, 2010

                                               AIM VARIABLE INSURANCE FUNDS
                                               (INVESCO VARIABLE INSURANCE FUNDS

Attest: /s/ Xxxxx Xxxxxxxx                     BY:    /s/ Xxxx X. Xxxx
        -------------------                           --------------------------
Name:   Xxxxx Xxxxxxxx                         Name:  Xxxx X. Xxxx
Title:  Assistant Secretary                    Title: Senior Vice President

                                               INVESCO DISTRIBUTORS, INC.

Attest: /s/ Xxxxx Xxxxxxxx                     BY:    /s/ Xxxx X. Xxxxxx
        -------------------                           --------------------------
Name:   Xxxxx Xxxxxxxx                         Name:  Xxxx X. Xxxxxx
Title:  Assistant Secretary                    Title: President

                                               CUNA MUTUAL INSURANCE SOCIETY

Attest: /s/ Xxxxx X. Xxxxxx                    By:    /s/ Xxxxx Xxxx
        -------------------                           --------------------------
Name:   Xxxxx X. Xxxxxx                        Name:  Xxxxx Xxxx
Title:  Senior Law Specialist                  Title: SVP

                                               CUNA BROKERAGE SERVICES, INC.

Attest: /s/ Xxxxx X. Xxxxxx                    By:    /s/ Xxxxx Xxxx
        -------------------                           --------------------------
Name:   Xxxxx X. Xxxxxx                        Name:  Xxxxx Xxxx
Title:  Senior Law Specialist                  Title: President

                                        2