Expense Report

An expense report form with repeating line items, computed totals, and conditional approval.

Features demonstrated:

• Field array for expense line items (date, type, description, amount, receipt upload)
• Three computed read-only fields: subtotal via $fn.sumExpenseItems(), tax amount, and total (subtotal * tax rate)
• Business justification field auto-shown and required when the computed total exceeds $5,000
• Currency selector (USD/EUR) that dynamically updates the labels on subtotal, tax, and total fields
• Numeric range validation on line item amounts and tax rate

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