# RPUSHX

> Push an element at the end of the list only if the list exists.

## Arguments

<ParamField body="key" type="string" required>
  The key of the list.
</ParamField>

<ParamField body="elements" type="...TValue[]" required>
  One or more elements to push at the end of the list.
</ParamField>


## Response

<ResponseField type="number" required>
  The length of the list after the push operation.

  `0` if the list did not exist and thus no element was pushed.
</ResponseField>

<RequestExample>
```ts Example 
await redis.lpush("key", "a", "b", "c"); 
const length = await redis.rpushx("key", "d"); 
console.log(length); // 4
 ```

 ```ts Without existing list 
const length = await redis.rpushx("key", "a"); 
console.log(length); // 0
 ```


</RequestExample>