----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Dynamic Variables]() * [Get Call]() * [Create Phone Call]() * [List Calls]() -----------------------------

### Answer Hello Tyler, It seems like you are facing an issue where the built-in dynamic variable

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is not being transformed correctly during incoming phone calls, while it works as expected during web calls. This issue may be related to how the system handles variable transformations based on the call type. Ensure that the dynamic variables feature is correctly implemented across different call types and that there aren’t any differences in the system's handling of web and phone calls which might be causing this behavior. Since this is a specific implementation detail that might require further technical investigation or could be a bug, I recommend verifying your implementation against the latest [Dynamic Variables documentation]() to ensure it aligns with the expected configurations [(1)]() . If the problem persists, this might be a good case for raising a ticket with Vapi's technical support team to get more tailored assistance. For your reference, dynamic variables should automatically adjust without needing additional configuration for different call types as described in the [documentation](). : [Dynamic Variables]()

Got it. Tagging @User for additional help.

Updated the docs @Marcus Reis @Tyler Thompson