we cannot change the value for the potential name-field to a fix dropdown-list, but this is very important for us.

My idea is to create a custom field with a dropdown-list and fix values (this field is mandatory).

Now if a sales person add a potential he'll select a value from this list e.g. "Product XYZ". After he selected this value, this value will be cloned instantly to the system textfield "potential name".

Would it be possible to create this function with the "custom function"-feature? Any idea?