Hi @Jacao and welcome to the Quick Sight community!
When you are using a datetime parameter, you can also define the format to be used within the control using the “Format control” pane by selecting the “Edit” option on the control:
As of now, controls linked to a datetime parameter can only be of type “Date picker”.
When leveraging String parameters, you can also define dynamic default values on a user or group level (see documentation). For that default value to always return the current month, you can add a calculated field in the dataset used to define the dynamic default values in the following way:
formatDate(truncDate('MM',now()),'yyyy-MM-dd')
However, if your use case involves embedding the dashboard into an application, the easiest way to achieve your desired behavior is to calculate and set the default value (current month) from within your application using the Amazon Quick Sight Embedding SDK ( parameters within the contentOptions).
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