How do I edit Google ads ‘event snippet’

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How do I add this snippet so it can track the order value? As well as the order id?

<script>
gtag(‘event’, ‘conversion’, {‘send_to’: ‘AW-123456789/AbC-D_efG-h12_34-567’,
‘value’: 1.0,
‘currency’: ‘USD’
});
</script>

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