Looping through fields

i have 10 radio button fields…a1, a2, a3, …a10

each radio button has only 1 keyword choice…

i want to uncheck other buttons if one is selected…e.g when “a1” is tick…a2 to a10 will be unchecked…

TIA

Subject: looping through fields

Do u need all ten fields? Y dont u put all the ten choices in one radio button field?