Hi hari, you can retrieve the content of the variables using $(VariableName).
Note that this will retrieve the content of the variable, not the result, so for example if you have a variable name vMaxYear, and the user sets 2016 as the content you can use this in script like this:
SELECT fields FROM table WHERE YearField<=$(vMaxYear);
// Is converted to: SELECT fields FROM table WHERE YearField<=2016;
But if the user set as variable content =Max(Year), in front-end you can see the variable as 2016, but in script it will return an error in the previous example:
// Is converted to: SELECT fields FROM table WHERE YearField<==Max(Year);
