add value, fix json

Author: arcoraven

apps/portal/src/app/engine/faq/page.mdx

@@ -47,26 +47,39 @@ Here are three ways to determine when the job is mined:
   };
   ```
 
+### How do I send native currency with my transaction?
+
+To send native tokens (e.g. ETH on Ethereum), set `txOverrides.value`.
+This may be required when calling a `payable` contract method.
+
+Here's an example of sending 0.2 ETH:
+
+```json
+{
+  // ...other arguments in the write transaction
+
+  "txOverrides": {
+    "value": "200000000000000000"
+  }
+}
+```
+
 ### How do I override gas settings?
 
-To override the gas settings, set `txOverrides` in the request body for any write transaction.
+To override the gas settings, set relevant `txOverrides` gas fields.
 Each field is optional and will be estimated by Engine if omitted.
 
-Here's an example request body for a transfer transaction:
+Here's an example of setting a gas limit of 210,000 gas units, 1 gwei max fee, and 1 gwei max priority fee:
+
 ```json
 {
-  // Arguments for a transfer transaction
-  "to": "0xA954fC66de1F90cFB4f29F0ABa391412406820B7",
-  "amount": "0.5",
-  
-  // 👇 Specify these overrides based on your chain's gas settings
-  txOverrides: {
-    // The limit of gas units to use for this transaction.
-    gas: "530000",
-    // The max fee (e.g. gas price) to use in wei.
-    maxFeePerGas: "1000000000",
-    // The max priority fee to use in wei.
-    maxPriorityFeePerGas: "1000000000",
+  // ...other arguments in the write transaction
+
+  "txOverrides": {
+    "gas": "210000",
+    "maxFeePerGas": "1000000000",
+    "maxPriorityFeePerGas": "1000000000"
+  }
 }
 ```
 
@@ -78,17 +91,19 @@ Otherwise if gas prices don't fall, transactions may be in your queue indefinite
 
 ### How do I set a timeout on transactions?
 
-To Set the `txOverrides` 
-Engine will drop transactions if they are not sent before the timeout.
-Note: A transaction that is already sent may be mined after this timeout.
+To specify a transaction timeout, set `txOverrides.timeoutSeconds`.
+Engine flags transactions as `errored` if they are not sent before the timeout. An `errored` webhook will be sent.
+
+Note: A transaction sent before the timeout may be mined after the timeout.
 
+Here's an example of a 2-hour timeout:
 ```json
 {
   // ...other arguments in the write transaction
 
-  // 👇 Specify this override. Here's an example of a 2 hour timeout.
-  txOverrides: {
-    timeoutSeconds: 7200,
+  "txOverrides": {
+    "timeoutSeconds": 7200
+  }
 }
 ```
 

apps/portal/src/app/engine/features/contracts/page.mdx

@@ -75,10 +75,10 @@ To send native tokens to a payable method (e.g. ETH on Ethereum), set `txOverrid
 
 ```json
 {
-  functionName: "...",
-  args: [ ... ],
-  txOverrides: {
-    value: 1000000000000000, // 0.001 ETH in wei
+  "functionName": "...",
+  "args": [ ... ],
+  "txOverrides": {
+    "value": "1000000000000000", // 0.001 ETH in wei
   }
 }
 ```