insert a HTTP: header into a HTTP:redirect

I am fairly new to writing iRules and I am not even sure if this is possible. My company is trying to have me write an iRule that will redirect users who are using less then 128 bit encryption on SSL ciphers to redirect them to a information page. I need to somehow come up with a way to insert a HTTP::header so that after they see the informatiional page, that they will be redirected back to the same virtual server that they were just at, but I have to see if a HTTP:: Header "LOW_CIPHER" = "TRUE" then to let them in without the redirect to give the users the time to update there browsers without not giving them access to the website in the mean time. I have the redirect down pat, but I am stumped at how to insert the "LOW_CIPHER" header and set the value to "TRUE" in a HTTP::redirect, if even possible.

 

 

 

 

 

Any help I could get on this would be greatly appreciated.