What to use for treatment rule when creating seperate rates for each age

Summary: We have a Life Assurance plan where the rates vary for each age group like Age 16 - 0.5, Age 17- 0.7, Age 18 - 0.9,…… Age 50- 10.6.
to achieve this what would be the treatment rule, is it replace , and the rates are calculated for every 10,000 pounds.

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