unable to recognize radio button on pop up window?

Question

Hi, here is the code I have written IE iepopup_1 = IE.AttachToIE(Find.ByUrl("")); // It opens popup window iepopup_1.Button(Find.ById("btnContinue")).Click(); //Click on continue button to opejavascript IE iepopup_2 = IE.AttachToIE(Find.ByUrl("")); // It opens a java script window iepopup_2.RadioButton(Find.ById("DAILYPROBLEMS_1")); iepopup_2.RadioButton(Find.ById("BOUNCEBACK_1"));

I am not sure whether this is correct code or not but it looks like that radio buttons are not getting recognized. When clicking on 'Continue' button opens a java script, I treated it as another iepopup_2 window(is this correct?) Sorry I am very new to this tool. Thanks Smita