Client Script Error - Cannot read properties of undefined (reading 'CRM')

Client Script Error - Cannot read properties of undefined (reading 'CRM')

Hi Guys

I have a custom form, and I have a client Script set for onLoad of the new form.

Below is the script I have defined and the error:
Cannot read properties of undefined (reading 'CRM')

See Screen Shot Attachement for Details.

Here is the Script:

log("Setting Fields to Defaults");

ZOHO.CRM.UI.OnLoad(function(data) {
    ZOHO.CRM.FIELDS.setValue("Photo_Hours", 0);
    ZOHO.CRM.FIELDS.setValue("Photo_Pay_Rate", 0.00);
    ZOHO.CRM.FIELDS.setValue("Tagged_Quantity", 0);
    ZOHO.CRM.FIELDS.setValue("Tagging_Pay_Rate", 0.00);
    ZOHO.CRM.FIELDS.setValue("Pay", 0.00);
    ZOHO.CRM.FIELDS.setValue("Estimated_Amount", 0.00);
});