How do I select an option from a dropdown menu and update the webpage. Code:

Dim IE As New SHDocVw.InternetExplorer

Dim HTMLDoc As MSHTML.IHTMLDocument
then I navigate to a URL and I fetch the dropdown menu using html id and put value=my desired value

HTMLDoc.getElementById("xyz").Value = "dropdown_option"
I successfully get the option. But, the website doesn't update? e.g. filling up other fields.

I believe some javascript needs to be run. How can i fix this using VBA?

Source code for dropdown menu field: