code: function updateFee() {
  		// Check for amount errors
  		if(undefined === $("#amount").val() || !nem.utils.helpers.isTextAmountValid($("#amount").val())) return alert('Invalid amount !');
  
  		// Set the cleaned amount into transfer transaction object
  		transferTransaction.amount = nem.utils.helpers.cleanTextAmount($("#amount").val());
  
  		// Set the message into transfer transaction object
  		transferTransaction.message = $("#message").val();
  
  		// Prepare the updated transfer transaction object
  		var transactionEntity = nem.model.transactions.prepare("transferTransaction")(common, transferTransaction, nem.model.network.data.testnet.id);
  
  		// Format fee returned in prepared object
  		var feeString = nem.utils.format.nemValue(transactionEntity.fee)[0] + "." + nem.utils.format.nemValue(transactionEntity.fee)[1];
  
  		//Set fee in view
  		$("#fee").html(feeString);
  	}
docs: Function to update our fee in the view