Hi @bcjks
If you want to update some other field when the Cascading field for email updates, you can use 'change' EventListener. Just add another HTML Block, and use something like this:
<script>
const emailCascField = document.querySelector('input[name="cbParamVirtual1"]'); //Your email field
emailCascField.addEventListener('change', (e)=>{
const anotherField = document.querySelector('input[name="EditRecordOtherFieldName"]'); //Field you want to populate
anotherField.value = emailCascField.value;
});
</script>