Hi,
Use click activity you most probably your selector has idx value as 1,2,… an so on. Pass the value to idx attribute according to select the radio button.
or if you just wants to know which button is checked or not then use get attribute to check the status of it.
Lets say I am having 10 lists with radio buttons on the list. I have the list in excel and I looped it. For each item in that loop I have to click the corresponding radio button. It can be anywhere like firstone,3rd or last.
Basically I have to click the radio button corresponding to a word relative to it.