I have passed the combo box values start date & end date in C6 & C7 cell then using the push button I am passing the values from F10 to H6.
Finally used a query refresh button initially it will trigger the dashboard from F10, once you change any values I have used the when value changes trigger option and trigger from H6.
To know more about that when value changes, please check this link.
Difference between "When value Becomes & When value Changes"