...make text blink using a while

I'm trying to get some text to blink in a slow, steady blink without actually disappearing. I tried the while loop, and said that if the players health is greater than 0, keep the text blinking, but all I get is an error as the while loop never closes. I'm not sure how to do this and have already searched the manual. Any thoughts on how to go about this? Maybe a Boolean? Not sure.

Example Capx.

dl.dropbox.com/u/36472942/construct/forumhelp/Blinking_Text.capx.Is there anyway to get it to dim, but never fully go out and keep "blinking" like that? I was thinking a constant change in opacity but that would be a lot of code. So it would dim, then it would turn fully back on again and dim and just keep doing that until the player died? Thanks man.

Same logic, different behavior

Sine movement Opacity.

Thanks man, that did the trick.