Customize Web Site Text for Webstore

The Webstore email messages we have currently says
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Dear {1},
Your order no. {2} has been fulfilled and shipped.
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In which the Web store order fulfilled email body. {1} is replaced with the customer name.
The issue is that Customer Name by default is set to eg: Dixon, Natalie showing the Lastname first, followed by Firstname.

I would like to change {1} to {Firstname} {Lastname} in the Customised Text message so it says

Dear Natalie Dixon,

What is the correct way to change the text to

Is it

Dear ${customer.firstName} ${customer.lastName},

or Dear <%=getCurrentAttribute('customer',customer.firstNa me)%> <%=getCurrentAttribute('customer',customer.lastNam e)%>