text over a button disappears once rendered into a PDF
Hello everyone
I am working on creating an interactive pdf... where upon clicking a button, a text box shows below.

Now i am facing some issues with the same.
I have a box (red) with some text overlay on it. i have converted the red box into a button (just the red box, not the text overlay of 'Alarms' has been converted into a button) so that when i click it a blue box shows below. now that functionality of hide / show is working OK. but the box / button that has the text overlay, 'Alarms', disappears when i render the InDesign docuemnt into a PDF.

i am not sure why this is so. any guidance on how to fix this would be appreciated.
Regards
