Add data in excel Data table

I have 3 columns in an excel file and 3 variables(Age,name,Family) that change.
I need to add data each time in a new line.

i create a Excel Application Scope, open excel file. Then 3 Assign where filling in variables with values
like age =19
Then 3 Add Data Row element and in Data Row field i write variable age. Next Add Data element Name.

But i have error.

Age Name Family
12 Kate Nooq


use read range and loop through each row and then use add datarow

i need 3 add data row ? where should I enter my variables ?