# Callback Response Object

**URL:** <https://community.fireblocks.com/t/callback-response-object/1251>\
**Category:** Support\
**Created:** [July 31, 2024, 4:10am UTC](https://community.fireblocks.com/t/callback-response-object/1251 "2024-07-31T04:10:12Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![charlie](https://avatars.discourse-cdn.com/v4/letter/c/d6d6ee/32.png) [@charlie](https://community.fireblocks.com/u/charlie)\
**Post date:** [July 31, 2024, 4:10am UTC](https://community.fireblocks.com/t/callback-response-object/1251/1 "2024-07-31T04:10:13Z")

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Hi team, “amountUSD” parameter is converted from “amount” parameter right? If so, how would you use the exchange rate to convert? And has it deducted the fee?

 ![Screen Shot 2024-07-31 at 11.03.10](https://us1.discourse-cdn.com/flex015/uploads/fireblocks/original/1X/7cbfec66d6a4304fb0276d6879f03137a6b6bee8.png)

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**Author:** ![Wilfred](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/wilfred/32/403_2.png) [@Wilfred](https://community.fireblocks.com/u/Wilfred)\
**Post date:** [July 31, 2024, 4:23am UTC](https://community.fireblocks.com/t/callback-response-object/1251/2 "2024-07-31T04:23:54Z")

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Hi @charlie the `amountUSD` parameter refers to the asset prices in USD.

Fireblocks assets USD conversion rates are taken from CoinGecko and CoinMarketCap

Please see this Help Center [article](https://support.fireblocks.io/hc/en-us/articles/360019301340-Asset-prices-and-US-dollar-conversion-rates) for more information

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**Author:** ![charlie](https://avatars.discourse-cdn.com/v4/letter/c/d6d6ee/32.png) [@charlie](https://community.fireblocks.com/u/charlie)\
**Post date:** [July 31, 2024, 4:44am UTC](https://community.fireblocks.com/t/callback-response-object/1251/3 "2024-07-31T04:44:28Z")

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Hi @Wilfred, in the document, I see the rate is updated every 30 minutes, can you reduce the time? For example every 10 minutes

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**Author:** ![Wilfred](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/wilfred/32/403_2.png) [@Wilfred](https://community.fireblocks.com/u/Wilfred)\
**Post date:** [July 31, 2024, 5:31am UTC](https://community.fireblocks.com/t/callback-response-object/1251/4 "2024-07-31T05:31:25Z")

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Hi @charlie unfortunately the update interval is a globally set value and not something that can be changed easily. we will share that feedback for our product team’s consideration

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**Author:** ![charlie](https://avatars.discourse-cdn.com/v4/letter/c/d6d6ee/32.png) [@charlie](https://community.fireblocks.com/u/charlie)\
**Post date:** [July 31, 2024, 6:11am UTC](https://community.fireblocks.com/t/callback-response-object/1251/5 "2024-07-31T06:11:18Z")

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I got it, thank you @Wilfred