Exhibit 1.A(8)(b)(xxiii) SEVENTH AMENDMENT TO PARTICIPATION AGREEMENT THIS AGREEMENT is made by and among Security Life of Denver Insurance Company, a life insurance company organized under the laws of the State of Colorado (the "Company"), Variable Insurance Products Fund, an unincorporated business trust organized under the laws of the Commonwealth of Massachusetts (the "Fund"), and Fidelity Distributors Corporation, a Massachusetts corporation (the "Underwriter") (collectively, the "Parties"). WHEREAS, the Parties executed a participation agreement dated August 10, 1994 (the "Participation Agreement"), governing how shares of the Fund's portfolios are to be made available to certain variable life insurance and/or variable annuity contracts (the "Contracts") offered by the Company through certain separate accounts (the "Separate Accounts"); WHEREAS, the various contracts for which shares are purchased are listed in Schedule A of the Participation Agreement; WHEREAS, the Parties have agreed that it is in their interests to add an additional Contract and class of Fund to be purchased by the Separate Accounts; NOW, THEREFORE, in consideration of their mutual promises, the Company, the Fund and the Underwriter agree as follows: 1. The Participation Agreement is hereby amended by substituting for the current Schedule A an amended Schedule A in the form attached hereto which adds the Strategic Benefit and Estate Designer Variable Universal Life policies to the list of Contracts funded by the Separate Accounts. 2. Section 2.5 of Article II. Representations and Warranties is hereby deleted and replaced in its entirety with the following: 2.5. (a) With respect to Initial Class shares, the Fund currently does not intend to make any payments to finance distribution expenses pursuant to Rule 12b-1 under the 1940 Act or otherwise, although it may make such payments in the future. The Fund has adopted a "no fee" or "defensive" Rule 12b-1 Plan under which it makes no payments for distribution expenses. To the extent that it decides to finance distribution expenses pursuant to Rule 12b-1, the Fund undertakes to have a board of trustees, a majority of whom are not interested persons of the Fund, formulate and approve any plan under Rule 12b-1 to finance distribution expenses. (b) With respect to Service Class shares and Service Class 2 shares, the Fund has adopted Rule 12b-1 Plans under which it makes payments to finance distribution expenses. The Fund represents and warrants that it has a board of trustees, a majority of whom are not interested persons of the Fund, which has formulated and approved each of its Rule 12b-1 Plans to finance distribution expenses of the Fund and that any changes to the Fund's Rule 12b-1 Plans will be approved by a similarly constituted board of trustees. 3. Paragraph 5.1 of Article V. Fees and Expenses is hereby amended to delete the following sentence as of the date of this Amendment, "Currently, no such payments are contemplated." 4. The Participation Agreement is hereby amended by substituting for the current Schedule C an amended Schedule C in the form attached hereto which adds certain other investment options to the Contracts funded by the Separate Accounts. 5. The Participation Agreement is hereby amended by substituting for the current Schedule D an amended Schedule D in the form attached hereto which adds certain classes of certain Fidelity Funds to some Contracts funded by the Separate Accounts. Executed this 26th day of April, 2000. Security Life of Denver Variable Insurance Products Fund Insurance Company BY: /s/ Jim Livingston BY: /s/ Robert C. Pozen ------------------------------ ---------------------------- Jim Livingston Robert C. Pozen Executive Vice President Senior Vice President Fidelity Distributors Corporation BY: /s/ Kevin J. Kelly ----------------------------- Kevin J. Kelly Vice President Schedule A ---------- Separate Accounts and Associated Contracts ------------------------------------------ Name of Separate Account and Contracts Funded Date of Established by Board of Directors By Separate Account - ----------------------------------------- ------------------- Security Life Separate Account A1 o The Exchequer Variable Annuity (November 3, 1993) (Flexible Premium Deferred Combination Fixed and Variable Annuity Contract) Security Life Separate Account L1 o First Line (Flexible Premium (November 3, 1993) Variable Life Insurance Policy) o Strategic Advantage Variable Universal Life (Flexible Premium Variable Universal Life Insurance Policy) o FirstLine II Variable Universal Life (Flexible Premium Variable Universal Life Insurance Policy) o Strategic Advantage II Variable Universal Life (Flexible Premium Variable Life Insurance) o Variable Survivorship Universal Life (Flexible Premium Variable Life Insurance) o Corporate Benefits Variable Universal Life (Flexible Premium Variable Life Insurance) o Strategic Benefit Variable Universal Life (Flexible Premium Variable Life Insurance) o Estate Designer Variable Universal Life (Joint and Survivor Flexible Premium Variable Life Insurance) Schedule C ---------- Other investment companies currently available under variable annuities or variable life insurance issued by the Company (not al funds/portfolios are available in all products): AIM VI Capital Appreciation Portfolio AIM VI Government Securities Portfolio Alger American MidCap Growth Portfolio Alger American Small Capitalization Portfolio Alger American Growth Portfolio Alger American Leveraged Allcap Portfolio GCG Trust Equity Income Portfolio Growth Portfolio Hard Assets Portfolio Limited Maturity Bond Portfolio Liquid Asset Portfolio Mid-Cap Growth Portfolio Research Portfolio Total Return Portfolio INVESCO VIF High Yield Fund INVESCO VIF Equity Income Fund INVESCO VIF Total Return Fund INVESCO VIF Utilities Fund INVESCO VIF Small Company Growth Fund Neuberger Berman Growth Portfolio Neuberger Berman Limited Maturity Bond Portfolio Neuberger Berman Partners Portfolio Van Eck Worldwide Insurance Trust Worldwide Bond Fund Worldwide Emerging Markets Fund Worldwide Hard Assets Fund Worldwide Real Estate Fund Fidelity Investments Variable Insurance Products Fund II Asset Manager Portfolio Index 500 Schedule D ---------- Portfolios of the Fund available as funding vehicles under the Contracts: Initial Class Shares Growth Portfolio Money Market Portfolio Overseas Portfolio Service Class Shares (Strategic Benefit Contracts only) Growth Portfolio Overseas Portfolio