change format of submitted inline ecits

i am using some code Allan provided to send data to my server in a simplified format and it looks like this:
action:edit
EmployeeID:15
LastName:Frazzetta

but i want it to look like this:
EmployeeID:15
FieldChanged: LastName
NewValue: Frazzetta

this way i can use the FieldChanged attribute to tell the query which field to change and use the NewValue attribute to tell the query what to update it to.