flashing alert

[Nir70]

You can do it with a transparent picture if there is no problem
and a animated gif with to pictures in it, 1 transparent and one with symbol of problem you want.

something like this

sourch: https://commons.wikimedia.org/wiki/File:Alert.gif

hello
Thank you very much, is this an icon you created? Can I create or change captions myself? ERRO for example? Regards