# Increasing Reward Relayer
## 1. Summary
The `IncreasingRewardRelayer` is a contract meant to pull funds from the `StabilityFeeTreasury` and send them to a custom address. The relayer can only be called by a specific address that requests payments.
This contract inherits functionality from the [IncreasingTreasuryReimbursement](https://docs.reflexer.finance/system-contracts/sustainability-module/increasing-treasury-reimbursement) contract.
## 2. Contract Variables & Functions
**Variables**
* `refundRequestor` - address that can request funds
* `lastReimburseTime` - timestamp of the last reimbursement
* `reimburseDelay` - enforced gap between reimbursements
**Functions**
* `modifyParameters` - modify contract parameters
* `reimburseCaller(feeReceiver: address)` - send SF rewards from the treasury to the `feeReceiver`
## 3. Walkthrough
`refundRequestor` is the only address that can call `reimburseCaller` and request a stability fee payment from the treasury.
`reimburseCaller` can only be called again after at least `reimburseDelay` seconds have passed since the last call.
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