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Co-authored-by: Cursor <cursoragent@cursor.com>

docs/PRICEFEEDKEEPER_VARIABLE_FIX.md

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+# PriceFeedKeeper Variable Name Fix
+
+**Date**: 2025-12-24  
+**Status**: ✅ Fixed
+
+---
+
+## 🐛 Issue
+
+After renaming the return variable from `needsUpdate` to `updateNeeded` in `checkUpkeep()`, the code inside the function was still trying to assign to the old variable name `needsUpdate`.
+
+**Error**:
+```
+Error (7576): Undeclared identifier. Did you mean "_needsUpdate" or "needsUpdate"?
+   --> contracts/reserve/PriceFeedKeeper.sol:104:13:
+    |
+104 |             needsUpdate = true;
+    |             ^^^^^^^^^^^
+```
+
+---
+
+## ✅ Fix
+
+Changed assignments from `needsUpdate` to `updateNeeded`:
+
+```solidity
+// Before
+needsUpdate = true;
+needsUpdate = false;
+
+// After
+updateNeeded = true;
+updateNeeded = false;
+```
+
+---
+
+## 📋 Files Modified
+
+- `contracts/reserve/PriceFeedKeeper.sol` (lines 104, 107)
+
+---
+
+**Last Updated**: 2025-12-24
+