<Txn>

<PostUsername>{{ uid }}</PostUsername>
<PostPassword>{{ key }}</PostPassword>
<Amount>{{ "%0.2f" % amount }}</Amount>
<InputCurrency>{{ currency }}</InputCurrency>
<TxnType>{{ type }}</TxnType>
<TxnId>{{ this.h(txn_id) }}</TxnId>
<MerchantReference>{{ this.h(ref) }}</MerchantReference>
<DpsBillingId>{{ this.h(token) }}</DpsBillingId>

</Txn>