how to get the variables in console application from execute process task ?

Hi , In execute process task am passing 2 variables under expression -> argument type as @var1+" "+@var2.

I received in console application as 

 string Region= args[0].ToString().Trim();
 string location= args[1].ToString().Trim();

If i used any Region or location in ado.net operations am receving like 

the name is "Region" not permitted in this context valid expressions are constants.