OnPostReload events will not trigger in the Server environment. It is documented in the Reference Manual, section 82.2 "Macro functionality limitations".
You can instead create a landing sheet or welcome sheet that shows the name of the user, time of access and name of the dashboard, and add a button that the user has to click to go to the analyses. This button can have an action set to trigger a Select in Field event, so when the button is clicked the value is selected. Depending on your document you can set it as an OnActivateSheet or OnLeaveSheet event, but I'd rather use the mentioned.
Hope that helps.