updating tracing

Author: aahill

articles/ai-services/agents/concepts/tracing.md

@@ -26,11 +26,12 @@ Tracing solves this by allowing you to clearly see the inputs and outputs of eac
 The Agents playground in the Azure AI Foundry portal lets you trace threads and runs that your agents produce. To open a trace, select **Thread info** in an active thread. You can also optionally select **Metrics** to enable automatic evaluations of the model's performance across several dimensions of **AI quality** and **Risk and safety**. 
 
 > [!NOTE]
-> Evaluations are not available in the following regions.
-> * australiaeast
-> * japaneast
-> * southindia
-> * uksouth
+> * Evaluations are available for 24 hours after they're generated.
+> * Evaluations are not available in the following regions.
+>     * australiaeast
+>     * japaneast
+>     * southindia
+>     * uksouth
 
 :::image type="content" source="../media/ai-foundry-tracing.png" alt-text="A screenshot of the agent playground in the Azure AI Foundry portal." lightbox="../media/ai-foundry-tracing.png":::