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ToolCalls webhook response for multiple values

I keep receiving error message that unable to get recommendations from the webhook response (call id is 0b1d6e97-1311-4a34-bfb6-4659bdedd563). The tool calls is triggering multiple functions so updated the webhook response to send multiple responses but that is still not resolving the issue. So two questions:

    1. Is there a way to force the toolCalls to send both car descriptions inside of one function, or is this parallel function calling something not configurable by Vapi?
    1. If 1 is not possible, then I figured I could send Vapi back multiple responses for it to pick the correct one. However, the Assistant is responding that it's unable to get car recommendations.
Thanks.
ToolCallCarRecommendation.jpg
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