Solution to this problem is quite simple...... contact me for answer
You can use something like this code as the custom validation script of the drop-down field (make sure to tick the "Commit selected value immediately" box under its Properties - Options):
if (event.value=="Option1" || event.value=="Option2" || event.value=="Option3")
this.getField("Checkbox1").value = "1";
else this.getField("Checkbox1").value = "2";
You'll probably need to adjust the field names and values in the code. This is just a generic example.
The forums work best if replies and discussions are PUBLIC. Please help the forums to thrive so that they can help you.