Hi @DrewW 

The issue I'm encountering is with the Item and Catalog Task in the fulfiller view.

It works perfectly fine in the self-service portal without any errors.

Below are the steps I tested in my PDI. When you have a chance, you can replicate it in your PDI to check if you're experiencing the same issue.

STEP 1 - Create a text variable

STEP 2 - Create a Multiple choice variable with one value "yes"

STEP 3 - onChange Client Script code:

function onChange(control, oldValue, newValue, isLoading) {
    
	
	if (newValue == 'yes') {
        g_form.setLabelOf('old_phone', 'New Phone');
    } else {
        g_form.setLabelOf('old_phone', 'Old Phone');
    }
}