[Question] : How to create variable with nested variable like an object

[VimalKumarS]

How to create variable with nested variable like an object

VariableCollection variables = context.Variables;
variables.Add("a.f", 100);
variables.Add("b", 1);
variables.Add("c", 24);

        IGenericExpression<bool> e = context.CompileGeneric<bool>("(a.f == 100"); //a.f not working

Even tried nested varaible
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;

        //variables.Add("a", 100);
        variables.Add("b", 1);
        variables.Add("c", 24);
        ExpressionContext context1 = new ExpressionContext();
        VariableCollection variables1 = context1.Variables;
        variables1.Add("f", 100);
        variables.Add("a", variables1);

Any help or direction?