specflow Extranal data

I have installed Nugut Package SpecFlow.ExternalData to get the data from JSON fileMy Json File looks like "Lorems": {

"Latin": "49",
"Latin1": "50",
},

My feature file looks like 

@property:text=Lorems
Scenario: Add two numbers
Given the firstnumber is <text>
When the SecondNumber is <text>

whole scenario gets executed  with value 49 first and then 50 .

My requirement is to pass 49 in first number and 50 in second number .Is it possible via external data?

Also, is it possible to use multiple @property  in single scenario??