Hello, If I recall correctly, there is no such event, in fact you have to use the raise event method with event equals to onMouseUp on the password or username component. There is a JS script in the web page that validates a few things like length is 4 or more and this is triggered on a JS event. So is your automation's responsibility to fire the event.

I believe you are looking for the "click" event of a button control. Simply select the configure type library in the object inspector to select the click event to use in your automation work flow. Make sure you have the button selected as your object.

You can also use a raise event method and select "onclick" as the event you would like to raise against an object.