In the Case entity main form, when the user click the +New Case button, it will show HTML WebResource PopUp Dialog before NewCase form show.
In that PopUp dialog form, the user will select value from DropDown control and then click submit button.
Then, NewCase form will be shown as normal.
I want to know the below -
1) How to get value from HTML Webresource to CRM field when user click submit button?
2) Can I show PopUp Dialog before NewCase form?
Please help me.