You can display custom error messages in the Note field based on user input, using Deluge Scripting. The sample application Update Note in the following link demonstrates how to display customized text in a Note field, based on user input to your form.. The script modifies the content of a Note field when a client-side event happens.

About the Application

The application comprises of a form named Test form with the following fields:

1. Fruit of type picklist to display the types of fruits.
2. Flash monkey of type decision check box.
3. note_buffer of type multi-line text to store the html image code, based on the selected fruit.
4. the_note of type note to display the image of the selected fruit.

Adding Deluge Script

1. When the form is loaded, the on add ->on load script hides the note_buffer field, using the hide syntax.

on add
 {
 on load
 {
 hide note_buffer;
 }
 }

2. The on user input script added in the Fruit field updates the note_buffer with a blob of HTML as a multiline string, based on the Fruit selected. This is then displayed in the the_note field.

Fruit
 (
 type = picklist
 values = {"apple", "banana", "cantelope"}
 on user input
 {
 if (input.Fruit == "apple")
 {
 input.note_buffer = "<img height='250' width='250' src='http://images.jupiterimages.com/common/detail/39/61/23036139.jpg'/>";
 }
 else if (input.Fruit == "banana")
 {
 input.note_buffer = "<img height='250' width='250' src='http://www.momadvice.com/blog/uploaded_images/banana-759611.jpg'/>";
 }
 else if (input.Fruit == "cantelope")
 {
 input.note_buffer = "<img height='250' width='250' src='http://www.kids-cooking-activities.com/images/cantelope.jpg'/>";
 }
 input.the_note = input.note_buffer;
 }
 )

Code Explanation

if (input.Fruit == “apple”) - If condition to check the Fruit type

input.note_buffer = “<img height=’250′ width=’250′ src=’http://images.jupiterimages.com/common/detail/39/61/23036139.jpg’/>”; - Stores the html code as a multi-line string in the note_buffer field.

input.the_note = input.note_buffer;- Updates the_note field with the value stored in the above note_buffer field. This field displays the actual image.

3. If the show_monkey checkbox is selected, the on user input script added in the show_monkey field updates the note field with the fruit type and the monkey image, else only the fruit type is displayed.

show_monkey
 (
 displayname = "Flash monkey?"
 type = checkbox
 defaultvalue = false
 on user input
 {
 if (input.show_monkey)
 {
 input.the_note = input.note_buffer + "<img height='250' width='250' src='http://upload.wikimedia.org/wikipedia/commons/2/27/Baby_ginger_monkey.jpg' />";
 input.show_monkey = false;
 }
 else
 {
 input.the_note = input.note_buffer;
 }
 }
 )