How can I make multiple fields mandatory depending on selections in single-select list?

My current script isn't working at all. It doesn't even look like the behavior is being triggered. 

I'm attempting to make 3 fields--Supplier (10132), Live Date (10343), and MPAN/MPR (10256)-- mandatory when one of the following selections is selected from the Ticket Category (10123) drop-down list:

• Commissions - Missing Payment/Incorrect Payment
• Commissions - Supplier Payment Terms Query
• Commissions - Commission Statement Query
• Commissions - Update Brokerage Info
• Commissions - Received commission clawback

const changedField = getChangeField(); // List of ticket categories that will trigger the requirement const requiredCategories = [ "Commissions - Missing Payment/Incorrect Payment", "Commissions - Supplier Payment Terms Query", "Commissions - Commission Statement Query", "Commissions - Update Brokerage Info", "Commissions - Received commission clawback" ]; // Check if the changed field is the Ticket Category field and if the selected value is in the requiredCategories list const isRequired = changedField.getType() == "com.atlassian.jira.plugin.system.customfieldtypes:select" && changedField.getName() == "Ticket Category" && requiredCategories.includes(changedField.getValue().value); // Set the required status for the specified custom fields getFieldById("customfield_10256").setRequired(isRequired); getFieldById("customfield_10343").setRequired(isRequired); getFieldById("customfield_10132").setRequired(isRequired);

See Behavior set up screenshots below: