Hello,
Absolutely Possible!
You can easily use jQuery Events to display Modals. Example consider using the following code:
[ch_pre type="js"]jQuery('#template-contactform').on( 'formSubmitSuccess', function(){
// Your JS Codes here to open the Modal
});[/ch_pre]
Replace #template-contactform with your actual Form ID. You can find more Documentation here: http://docs.semicolonweb.com/docs/forms/alerts/ .
You can consider using the Modals from here: http://themes.semicolonweb.com/html/canvas/modal-popovers.html .
Finally, you can use this Code:
[ch_pre type="js"]jQuery('#template-contactform').on( 'formSubmitSuccess', function(){
var modalToggle = document.getElementById('#my-modal')
myModal.show(modalToggle)
});[/ch_pre]
This will definitely work fine. Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.