# Is valid delegated media gid
> Supported in: Batch, Faster, Streaming
Returns true if the input is a valid gotham delegated media gid. Check gotham's delegated media rtfm for more details.
**Expression categories:** Boolean
## Declared arguments
* **Expression:** String to check is a valid gotham delegated media.
*Expression\*
**Output type:** *Boolean*
## Examples
### Example 1: Base case
**Argument values:**
* **Expression:** hello
**Output:** false
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### Example 2: Base case
**Argument values:**
* **Expression:** ri.gotham-delegated-media.12345678-1234-1234-1234-123456789012.testaudiotype.testlocator
**Output:** true
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### Example 3: Null case
**Argument values:**
* **Expression:** *null*
**Output:** *null*
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